Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a65333c9475b846…

MALICIOUS

PDF

67.6 KB Created: 2021-02-22 19:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ea33f0902d794a54d390bc6d337be25a SHA-1: 0467a3ba80ebaf496765532bab63228c850d487c SHA-256: 7a65333c9475b846ec02e55b412c87abf77d2c9a476040f17cf9a9f29011ca7d
186 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.
  • 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=story+of+seasons+wild+animals+food PDF link annotation
    • https://cdn.sqhk.co/givifevulo/1IjbjbI/rowuvikavozasijegalik.pdfIn PDF document text
    • http://getfreecreditreport.info/mesemey1evr.pdfIn PDF document text
    • https://movabeze.weebly.com/uploads/1/3/0/8/130814110/134845.pdfIn PDF document text
    • http://babysampler.com/international_banking_and_financep31hn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_60130756a0b62.pdfIn PDF document text
    • https://cdn.sqhk.co/pubodegosog/giGhgUq/facts_about_the_human_body_circulatory_system.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411481/normal_6016faa5285fe.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/WknYYgh/74275064642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403672/normal_5fd33ef070cbb.pdfIn PDF document text
    • https://cdn.sqhk.co/kefekawit/jbxwXBm/amaze_file_manager_apk.pdfIn PDF document text
    • http://misstourist.info/jefelijewisa6bak3.pdfIn PDF document text
    • http://onesmall.space/zivirufuxewujigavitedamu10khx.pdfIn PDF document text
    • http://usecabinets.xyz/bapibino9duod.pdfIn PDF document text
    • http://verifiedbadges-form.com/asteroids_coming_close_to_earth_20206gxxf.pdfIn PDF document text
    • http://giocodigital.space/the_three_little_pigs_disneyx5eqo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384046/normal_5febc0cf85d30.pdfIn PDF document text
    • http://delifeschool.com/xuvituwulutelas4sg0e.pdfIn PDF document text
    • http://ooovseanalizi.ru/jonolataxolajuzawoburohlv.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_off0000cd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD45 5348 bytes
SHA-256: aa73828e5ba570847c73405e324f7c6b7b7d7ac8c622299fb1e9600363da09cb
font_01_sfnt_off0000df75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF75 9936 bytes
SHA-256: 47c7c55bbf617e074bb70fcdb039740d4ee4a10aaa1869642adb556758ec9a51