Malicious PDF — malware analysis report

Static analysis result for SHA-256 4875c5adf6574836…

MALICIOUS

PDF

70.8 KB Created: 2021-02-19 08:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d06a0543db145b837880aac912944644 SHA-1: 1c75b6ceabdaecb9bb675aab090a9b3401b5ba78 SHA-256: 4875c5adf657483623983eeafdcc94d94a9948eadbbc4f1565c855d58b565e33
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://druttle.ru/wix?keyword=minergate+apk+miner PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481403/normal_60225204e88f0.pdfIn PDF document text
    • https://dowisapi.weebly.com/uploads/1/3/4/2/134266119/14c7adc.pdfIn PDF document text
    • https://bobilemako.weebly.com/uploads/1/3/4/7/134733435/bugujox_xedetebexapi_jovorotaza_gasujadojiv.pdfIn PDF document text
    • https://mepapezivodeno.weebly.com/uploads/1/3/0/9/130969154/94deb95.pdfIn PDF document text
    • https://cdn.sqhk.co/nupepewomaxu/6iigcet/the_new_fight_night_game.pdfIn PDF document text
    • https://dajilifu.weebly.com/uploads/1/3/4/8/134891154/wizot-gabixujupe-depofoxa.pdfIn PDF document text
    • https://kotepavugenufe.weebly.com/uploads/1/3/4/5/134592782/satadubomenusik_javogemosamud_fovenoliwutupe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459059/normal_5fcbcfcb3b079.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/o9rLWhh/82184713255.pdfIn PDF document text
    • https://cdn.sqhk.co/lamikolo/n6hbgiH/vajiwir.pdfIn PDF document text
    • https://jovonawokemurif.weebly.com/uploads/1/3/4/6/134678447/rujesosixilorokas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381762/normal_5ffc5815e1d08.pdfIn PDF document text
    • https://xelipifexejup.weebly.com/uploads/1/3/4/8/134848770/2401805.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465559/normal_5fd5f3531ef9f.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/iifQ0Vt/barbershop_inc._online_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_5fcc255c8e2f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_6028fb7c99273.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448536/normal_5fc8a48fa578a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tupusivamiguta.rf.gd/90453728102.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_off0000d93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93E 5000 bytes
SHA-256: 744efb943420c906016a16725eb242056b394328fd297bb4bff6fb19873a94f4
font_01_sfnt_off0000ea3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3B 10532 bytes
SHA-256: c6b262d278dfab8ad592213c233447fcc2b83c000267ccdc8e9a8d57668a6bc1

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