Malicious PDF — malware analysis report

Static analysis result for SHA-256 d226252203dae436…

MALICIOUS

PDF

70.8 KB Created: 2021-02-20 22:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5b15e80babdce8d5e1ebf971a3233173 SHA-1: c3d1078e8571ac492c22e542801f1f0f5a9dc938 SHA-256: d226252203dae436a6300e82f9ecb6d550c631ef09338692e9b8407b28b93ec9
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=mx+player+apk+for+windows+10 In PDF document text
    • http://bigmagazin.xyz/up_from_slavery_booker_t_washington_summarybkigj.pdfIn PDF document text
    • https://ganokupojedozo.weebly.com/uploads/1/3/4/8/134890080/24705305f.pdfIn PDF document text
    • https://notebatamigoxaw.weebly.com/uploads/1/3/4/7/134715817/4539858.pdfIn PDF document text
    • http://iranianvc.com/how_to_use_scale_ruler_1_501hm0c.pdfIn PDF document text
    • https://tobuzedatenet.weebly.com/uploads/1/3/4/3/134322281/sopepes-revivewipuxo-tunip-zikipizodijutox.pdfIn PDF document text
    • https://duveniwapawas.weebly.com/uploads/1/3/4/2/134265961/nanovarezotare.pdfIn PDF document text
    • http://instofficial.online/wolonasegupulijigiqcne0.pdfIn PDF document text
    • http://vilopeg.xyz/netflix_gift_code_hackq96kb.pdfIn PDF document text
    • http://ig-copyrightviolation.com/how_to_start_ariens_snowblower_compact_24es7rv.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/fizup/developer_tools_android_emulator.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/40167540711.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/beautiful_wallpaper_hd_new.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/minikit_guide_lego_jurassic_world.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/kamalamma_kamatam_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/keys_backyard_spa_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/79564040557.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/dusezebotawivodux.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/n_n-_dimethylformamide_msds_sigma.pdfIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/35875534690.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_off0000d831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD831 5560 bytes
SHA-256: dc4bb82e53656cfb48663990f9b2aaddc78051cb136c5d2e95011ab599b7a385
font_01_sfnt_off0000eb5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5F 10136 bytes
SHA-256: b57a50a9e0ad78881e9b0529e3c36f72e725c73c34b217e88da776cf75e655f0

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