Malicious PDF — malware analysis report

Static analysis result for SHA-256 702ce83a9ce66c78…

MALICIOUS

PDF

42.6 KB Created: 2020-05-26 10:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51335f0d183536dba4d3815ee0a8719b SHA-1: 5ea4b5fd93e3aab778303549de6344f549d865ab SHA-256: 702ce83a9ce66c787b055f0ff9af53411bd01c635960ba6b8f5970376d47d9de
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, identified as a link farm, likely for SEO manipulation or to distribute malicious content. The ML classifier strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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 http://bodyworkbybarb.com/uploads/1/3/0/4/130483187/130483187.html#bell+hooks+pedagogy
    • http://webdisk.dmcicondosales.com/uploads/1/3/0/9/130969655/112a67f0a74.pdf
    • http://spotswoodland.com/uploads/1/3/0/4/130435787/moxavuposokivowosew.pdf
    • http://usaak47.com/uploads/1/3/1/6/131607930/4638014.pdf
    • http://farnhamflashfestival.org/uploads/1/3/0/5/130551241/notawuxevakefebawino.pdf
    • http://ptmusicacademy.com/uploads/1/3/0/5/130588698/2366ccd7c9a3ed.pdf
    • http://myberrygoodlife.com/uploads/1/3/1/6/131606569/0f94114.pdf
    • http://missions4jesuschrist.com/uploads/1/3/1/3/131380845/958858.pdf
    • http://edcmagnets.com/uploads/1/3/0/7/130740530/0b5c4583.pdf
    • http://antivirus.manoaschool.com/uploads/1/3/1/8/131856451/gurar.pdf
    • http://daviegaragedoornc.com/uploads/1/3/1/4/131406274/8687652.pdf
    • http://gustav-faberge.com/uploads/1/3/0/7/130776149/fee25df37b.pdf
    • http://ondasuave.com/uploads/1/3/0/5/130550700/vikexotap.pdf
    • http://northwindswaterfowl.com/uploads/1/3/0/2/130288830/vubinidakovuzogubo.pdf
    • http://mx.idealhome.services/uploads/1/3/1/1/131164250/funupagurobuxo-bitosajinav.pdf
    • http://fantabuledgy.com/uploads/1/3/0/6/130604575/gelazasutawud.pdf
    • http://prbycr.com/uploads/1/3/1/3/131379401/1560c3a5.pdf
    • http://investmentspotlight.net/uploads/1/3/0/5/130543813/2563022.pdf
    • http://6x.undesirable.us/uploads/1/3/0/6/130639224/5dd500411691c5.pdf
    • http://austin-roofers.org/uploads/1/3/0/9/130969992/wufaxe.pdf
    • http://mail.lawsnakard.com/uploads/1/3/0/6/130620797/1680752.pdf
    • http://ambyrosia.com/uploads/1/3/0/6/130621337/d90920734.pdf
    • http://singaporenewexecutivecondo.com/uploads/1/3/0/7/130774965/2724883.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b35.bin
9562c3d82ccdb36289b881d35f05c29af02099c542fd22813cfeea51070c05d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B35 10464 bytes

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