Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 d24c278ff4e31f4c…

MALICIOUS

PDF / .VIR

622.3 KB Created: 2023-04-29 05:15:17 Authoring application: Smallpdf Desktop First seen: 2024-04-16
MD5: e80c850b2799fcc9fb58187b69a15995 SHA-1: ff6e3fce47fde1cba692f7bed138ec0f7bfc32e8 SHA-256: d24c278ff4e31f4c4e31e595a97bc6e982b50d850a35db5850c9e8f62f92c262
216 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4553

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://flights-to-croatia-from-seattle.lesagikiw.cfd/644897.pdf In PDF document text
    • https://adservice.google.co.ma/ddm/clk/426382440;228185261;d;;%3F//img1.wsimg.com/blobby/go/b5e9389c-d1de-49a0-a4a3-14325dd38d33/downloads/kawegiwekizewizuf.pdfIn PDF document text
    • https://adservice.google.co.uz/ddm/clk/408405163;208572896;n;;%3F//ense-ando-a-tocar-a-los-deditos-pdf.nekitizu.sbs/dixakulekixisasomemo.pdfIn PDF document text
    • https://adservice.google.com.pg/ddm/clk/466651624;272226156;i;;%3F//img1.wsimg.com/blobby/go/a70789f9-2534-4495-aa9a-53887c8629aa/downloads/canadas_wonderland_map.pdfIn PDF document text
    • https://vatiw.muzukodo.cfd/zakojoraxijuliwogop.pdfIn PDF document text
    • https://adservice.google.com.mt/ddm/clk/426382440;228185261;d;;%3F//img1.wsimg.com/blobby/go/46baf80b-2def-4f9f-867f-a53099c01c32/downloads/80745592348.pdfIn PDF document text
    • https://adservice.google.co.ck/ddm/clk/478229754;284365575;c;;%3F//img1.wsimg.com/blobby/go/3d96c8cf-196a-49d7-b6a7-c181cafe58a0/downloads/lubusorisowur.pdfIn PDF document text
    • https://adservice.google.com.gh/ddm/clk/424929466;226923624;r;;%3F//img1.wsimg.com/blobby/go/b5e9389c-d1de-49a0-a4a3-14325dd38d33/downloads/9240062841.pdfIn PDF document text
    • https://laxetojili.xenina.co.za/977001478?tobusurefofoneposezimazutakofigelulopodogidopudirinowokamupurajejuzonogamifemakujajuderelutodekenoka=rimusoniserikigebumebinumulujinijofesawufotalobesobabenonetejanuvuwibewavarisuvikulojobikagifesidibabodumawebilukutenetatamapelovatixorilawidujisevalisetenadopowodituxatalebimuzidujometekuxanifirajejonelinufepe&keyword=trials+of+apollo+the+dark+prophecy&gofegusuvewazonoramikakowef=mokipisixoduwapavovopadalanevixefatutimewasodokugiligutaxunadikewebenekijuxitimedenifewobutanomazarelawexevopIn PDF document text
    • https://adservice.google.com.pr/ddm/clk/310682673;138356009;g;;%3F//bewexusaxuwe.gubusutopi.cfd/wijobuko.pdfIn PDF document text
    • https://laxetojili.xenina.co.za/977001478?tobusurefofoneposezimazutakofigelulopodogidopudirinowokamupurajejuzonogamifemakujajuderelutodekenoka=rimusoniserikigebumebinumulujinijofesawufotalobesobabenonetejanuvuwibewavarisuvikulojobikagifesidibabodumawebilukutenetatamapelovatixorilawidujisevalisetenadPDF link annotation
    • https://laxetojili.xenina.co.za/977001478?tobusurefofoneposezimazutakofigelulopodogidopudirinowokamupurajejuzonogamifemakujajuderelutodekenoka=rimusoniserikigebumebinumulujinijofesawufotalobesobabenonetejanuvuwibewavarisuvikulojobikagifesidibabodumawebilukutenetatamapelovatixorilawidujisevalisetenadopowodituxatalebimuzidujometekuxanifirajejonelinufepe&keyword=trials+of+apollo+the+dark+prophecy&gofegusuvewazonoramikakowef=mokipisixoduwapavovopadalanevixefatutimewasodokugiligutaxunadikewebenekijuxPDF link annotation
    • https://img1.wsimg.com/blobby/go/a70789f9-2534-4495-aa9a-53887c8629aa/downloads/dutixolufigefozutaxu.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/c75fe304-afa0-444a-8398-75f024eaba49/downloads/wawotavugow.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/62505339-f439-4a90-9683-5dbadd0e290d/downloads/wopefikirejopuvo.pdfIn PDF document text
    • https://adservice.google.sr/ddm/clk/424929466;226923624;r;;%3F//img1.wsimg.com/blobby/go/9c6cbe7f-76d2-4aee-a849-f537de278d42/downloads/livro_pericia_na_psiquiatria_forense.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/25f0f271-fa8c-4673-ae0b-6d8816509d0e/downloads/biwuwudeginulinurerawup.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/46baf80b-2def-4f9f-867f-a53099c01c32/downloads/mawijiwewuxebolavu.pdfIn PDF document text
    • https://adservice.google.cm/ddm/clk/300948314;127869103;e;;%3F//pugor.vanekubo.cfd/991.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/9b6ed793-452c-4f8f-8f80-6847f4d114d7/downloads/jorisepotesizejimof.pdfIn PDF document text
    • https://adservice.google.cl/ddm/clk/295204063;122181591;w;;%3F//img1.wsimg.com/blobby/go/a6e5b43b-79f3-41f8-8a97-1e85ec33928f/downloads/68435663437.pdfIn PDF document text
    • http://adservice.google.cm/ddm/clk/408533097;208818505;l;;%3F//cryptography-with-coding-theory-2nd-edit.genealogyconferencekeeper.org/3207019.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/46baf80b-2def-4f9f-867f-a53099c01c32/downloads/73531873122.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/4df17553-d488-446a-b415-1830cd0ff26f/downloads/economies_of_scale_notes.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/3af0602e-e6b8-430e-86d1-567d4658c658/downloads/zivafokukulurudaw.pdfIn PDF document text
    • https://adservice.google.md/ddm/clk/426382440;228185261;d;;%3F//img1.wsimg.com/blobby/go/ef68f5bf-1c9e-4947-a4bc-478dc938b22c/downloads/ps4_controller_not_working_properly_on_android.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/a70789f9-2534-4495-aa9a-53887c8629aa/downloads/chemistry_solids_liquids_and_gases_worksheets.pdfIn PDF document text
    • https://adservice.google.com.mx/ddm/clk/426382440;228185261;d;;%3F//img1.wsimg.com/blobby/go/9c6cbe7f-76d2-4aee-a849-f537de278d42/downloads/punjab_budget_speech_2020-19.pdfIn PDF document text
    • http://adservice.google.ae/ddm/clk/424929466;226923624;r;;%3F//xubafinisupo.levitationsciences.com/wafupumida.pdfIn PDF document text
    • https://adservice.google.vu/ddm/clk/478229754;284365575;c;;%3F//img1.wsimg.com/blobby/go/b65b3832-3c1d-4282-95ad-24d47b4834b2/downloads/22180754471.pdfIn PDF document text
    • https://adservice.google.com.tr/ddm/clk/408533097;208818505;l;;%3F//img1.wsimg.com/blobby/go/b5e9389c-d1de-49a0-a4a3-14325dd38d33/downloads/doxutawowibimosajekujimov.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/9978fe41-dbcb-4b88-8a80-a839de3f86b5/downloads/88728815285.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (stream_006_off00098775.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_006_off00098775.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00098775.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x98775 20916 bytes
SHA-256: cb5edb0d8b8e01693596d8e916aff61bd7858da21dbcc3ee98ccada1d0b279f1
font_00_sfnt_off00093b1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B1B 18120 bytes
SHA-256: f1ca01a7bc8afdbe12c92f566252d0e8b90a704973e165ff0148d18093d1b0b5
font_01_sfnt_off00096a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A3C 12240 bytes
SHA-256: fb472fc3b7e48205c967f1e9fd73b5e3e012efdba43e5117b0d5962e5969535e