Malicious PDF — malware analysis report

Static analysis result for SHA-256 472cbc7ccbed4a1c…

MALICIOUS

PDF

70.2 KB Created: 2020-12-29 12:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 2248506e7e581cc9a4f1e3de83661ff9 SHA-1: 442086cdfe7311401a9985bd219600a89cd54433 SHA-256: 472cbc7ccbed4a1c18438c8659dd19408d73de9fb617bc95016fbe8d34f16d58
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafffi.ru/123?utm_term=tekkit+legends+server+setup PDF link annotation
    • https://cdn.sqhk.co/mekizojo/jrVzoii/memogomulegutowi.pdfIn PDF document text
    • https://cdn.sqhk.co/kokuxisa/j6vjajd/37785019984.pdfIn PDF document text
    • https://soravetojovon.weebly.com/uploads/1/3/4/8/134890923/rapumowolip_rabukamojeketo_sulek.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/ee5a0cbd9.pdfIn PDF document text
    • https://cdn.sqhk.co/rowofabuf/mide5ja/cool_ringtones_for_iphone.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/xupedulig-dokefe-tulozakopodi-nisixupafof.pdfIn PDF document text
    • https://duzobiwaroliwu.weebly.com/uploads/1/3/2/6/132696147/3aca1cab12c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379984/normal_5fdfcb14d1918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411479/normal_5feaf19321c64.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bcc79a8-2d57-4e63-9435-7cbe8dfb4727/62178563365.pdfIn PDF document text
    • https://s3.amazonaws.com/suzeduselu/16167995354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8029e2d0-22b4-402c-bf65-8f3bdc16a273/92637677667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0a49680-3322-4bf0-b2ef-b391e4cafe4b/nixifurulovupuwanufasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c2a144f-ae72-440e-b73e-9686f93b88ff/regular_verbs_list_v1_v2_v3.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/rasukone.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_off0000d4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FC 4992 bytes
SHA-256: 749e5077ec8941730c9eda1c114e493764d569a2f572f0d05cf65f28564dfd70
font_01_sfnt_off0000e617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE617 11316 bytes
SHA-256: 5a1bb38225d13483147ed3f75845f71bdce388fd81d5cdba8f492b1c98d324af

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