Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae1ca395eaec466…

MALICIOUS

PDF

80.1 KB Created: 2021-03-04 01:26:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d68e4983eeffa63978f0657b3aeeca10 SHA-1: ff4d076f95e25ccd4c8f1dd89a4f4ba72a1641f0 SHA-256: 3ae1ca395eaec466d4daeca1d423c8d044267ad49277e4c11bb67c8d9de0f2f2
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://dugedepap.ru/123?utm_term=a+mother%2527s+reckoning+living+in+the+aftermath+of+tragedy+by+sue+klebold PDF link annotation
    • http://woxuruko.medianewsonline.com/44962115711.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/ghbO0hh/the_farm_sassy_princess.pdfIn PDF document text
    • https://bobelijanufav.weebly.com/uploads/1/3/5/9/135960041/dazogunuwisolo_vademisataku.pdfIn PDF document text
    • http://psychologyrelax.xyz/chrome_free_for_android_phone2j09c.pdfIn PDF document text
    • https://juromavunux.weebly.com/uploads/1/3/0/7/130776553/donati.pdfIn PDF document text
    • https://kukibutojiw.weebly.com/uploads/1/3/0/7/130775835/xuwapo_pugigol.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/jj2E1by/egg_inc_cheats_ios.pdfIn PDF document text
    • https://puralabeno.weebly.com/uploads/1/3/2/8/132814071/nefovod-jidote-rumer.pdfIn PDF document text
    • http://luminar3-download.xyz/pokemon_box_set_orderbq7s9.pdfIn PDF document text
    • https://rurezakofone.weebly.com/uploads/1/3/1/1/131163981/nololilitew.pdfIn PDF document text
    • https://cdn.sqhk.co/mosepoxik/gjfhbkn/track_my_ufone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/jeposanop/rhahahi/usiminas_usinas_siderurgicas_de_minas_gerais_sa.pdfIn PDF document text
    • http://copyrightmediahelp.com/88794874952134gk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/widofafane/sapimetebizoxoguzedaxaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/zoxemegafokin.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/what_is_triton_moon_made_of.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/pasutezuzuxiwuwozupote.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/xufozegaj.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB00 5824 bytes
SHA-256: 45bdbb9098775c1d68ed6fb2fa75e4da968909743783c77f2e94d641b7127e28
font_01_sfnt_off00010ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBD 10572 bytes
SHA-256: 4ab45d0dd1b8d3763e1b438090517336cd9b87ffd215f55caf0904b7baffa2e7