Malicious PDF — malware analysis report

Static analysis result for SHA-256 564fc7d210804535…

MALICIOUS

PDF

63.0 KB Created: 2021-02-18 20:17:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0d8490057af473c68aa8d52d0bb47cf0 SHA-1: 603a4d183d3cd1c72e1282390c2329e463b963f9 SHA-256: 564fc7d210804535dd4914dd028e152dd9659ede1a562c98a90117a7ffc945e4
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=dsm+5+desk+reference+pdf PDF link annotation
    • https://tebifenan.weebly.com/uploads/1/3/4/6/134675993/sonanavez.pdfIn PDF document text
    • http://knitfqph.site/xigumizujifukinepeq5o5.pdfIn PDF document text
    • https://jatilupek.weebly.com/uploads/1/3/4/4/134491857/988725.pdfIn PDF document text
    • https://bizavewes.weebly.com/uploads/1/3/5/3/135323934/xevaz_borodujosoledem.pdfIn PDF document text
    • https://guxitokos.weebly.com/uploads/1/3/2/6/132681611/5d85e993cf9.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/yCnLQjb/masterminds_game_show_network.pdfIn PDF document text
    • https://naxomusiji.weebly.com/uploads/1/3/1/6/131606859/4419336.pdfIn PDF document text
    • https://buporinedo.weebly.com/uploads/1/3/4/0/134041533/1559322.pdfIn PDF document text
    • http://normaa-id.com/kewamesuj7k087.pdfIn PDF document text
    • https://reponobokuwe.weebly.com/uploads/1/3/5/4/135401207/5666470.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/671890523016t8vr.pdfIn PDF document text
    • https://nulasexojexof.weebly.com/uploads/1/3/4/0/134012614/2edd03df8ac.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_off0000b9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F4 5244 bytes
SHA-256: 25519e7fe19878d3ee71cf1fac20c835c31b6f7a806539811e7998693cde99c6
font_01_sfnt_off0000cbca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCA 10424 bytes
SHA-256: ef1365a7df1bfb090e124746255db60a53d780260146f6916a7ceca5b4d94fdc