Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cdb565371cb2774…

MALICIOUS

PDF

67.7 KB Created: 2021-02-23 08:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 07f0b73831f1365898dc917d0e0a05d6 SHA-1: 08ea1b05f51d0ae323877568bb7295850774fc21 SHA-256: 2cdb565371cb2774b323faae30ddc60251e64b2d10adfe65b895919422c2205d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=procreate+ellipse+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426690/normal_6001f4b05203c.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/9u3gdjb/can_hitting_your_head_cause_seizures.pdfIn PDF document text
    • https://zogefiwodojur.weebly.com/uploads/1/3/4/3/134310711/3300957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421333/normal_6029e6668c21d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373526/normal_5fe4f71ba1fcd.pdfIn PDF document text
    • https://cdn.sqhk.co/gifexajed/gciezRG/nemeketavaparopa.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/hipjhEN/fivopipokevufenem.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/py2KjgS/adagio_classical_music_streaming.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459164/normal_6011d9f31def3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450517/normal_5fc71a9487987.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369645/normal_6020c1d4dd856.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479917/normal_6003955c596e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489852/normal_5ffc7b34f113a.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxobenona/gcha7jf/elton_john_song_zitate.pdfIn PDF document text
    • https://dawoxojukuput.weebly.com/uploads/1/3/4/8/134890950/lozikiperu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467030/normal_5ff3539594758.pdfIn PDF document text
    • https://cdn.sqhk.co/zojoguxuban/CljjmF2/que_es_virosis_en_ingles_presente_simple.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_602664c32028d.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/fcjdjgf/26550763908.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466143/normal_6014571c7f0ed.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/gfhejdE/new_shooting_games_for_switch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cd0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0D 5244 bytes
SHA-256: ca030f64968c72d458dd28e1269d8067d6d7f013bc83e6eb0fe0fb3de66873f2
font_01_sfnt_off0000dee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE8 10248 bytes
SHA-256: d910a43d6bbe7a748d1bd9364f23f39f91a1e685437efa751e8d0be0c399c631

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