Malicious PDF — malware analysis report

Static analysis result for SHA-256 66bf2b0f6f049915…

MALICIOUS

PDF

62.7 KB Created: 2021-02-14 03:29:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ac367c51b47847bdd020c78f3822e4bb SHA-1: b1a27b86aa1a23772dfefa775a7b3ce0146904c5 SHA-256: 66bf2b0f6f049915ebc9a2488e799c9bc041a89d32eaa9246662ac84b78d4e97
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=ap+psychology+progress+test+2+answers PDF link annotation
    • http://static-get.top/bomaxaxz3y3t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459034/normal_5ff6684450889.pdfIn PDF document text
    • https://kesafukiwunutab.weebly.com/uploads/1/3/4/9/134900694/sazezexexumiro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_601217b221624.pdfIn PDF document text
    • https://sogazefod.weebly.com/uploads/1/3/4/0/134000298/repojojukuf.pdfIn PDF document text
    • http://idealicaitalia-official.site/latest_sniper_games_for_ps4cmv77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474720/normal_6005ed717e9b2.pdfIn PDF document text
    • http://xilagima.66ghz.com/aspirin_primary_prevention_guidelines_diabetes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412905/normal_5fde02cc0568b.pdfIn PDF document text
    • https://zukodefikarux.weebly.com/uploads/1/3/4/4/134498552/bikikekabowemej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_6016fff2759d6.pdfIn PDF document text
    • https://barosowuni.weebly.com/uploads/1/3/1/3/131398377/6329215.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bupizakeluv.epizy.com/nikomazakinagirazawu.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_off0000b7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7BC 5508 bytes
SHA-256: 0fcac4d2c8918fd86846b6c0a06a87a1bae52e44505a78d5cfc5785df5c3d9d9
font_01_sfnt_off0000ca90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA90 10188 bytes
SHA-256: 058d7aff185494a1dc80e2dc69631d0843ac619e19e6343598824fd7568ad6d9