Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b67220a07a86baa…

MALICIOUS

PDF

38.7 KB Created: 2020-03-17 09:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 302e573b7d4c94af8e6c52470d8446b0 SHA-1: cb8c7db11a0df2a0e81a480dfcc20284e25ccd55 SHA-256: 7b67220a07a86baa92608a71160e142d71dc9327f27f75240bdbef3013ab1053
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to host or link to numerous other documents. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://atpforlife.org/uploads/1/3/0/4/130489361/130489361.html#derivative+of+arctan+2x PDF link annotation
    • http://nocompromisecustoms.com/uploads/1/3/0/2/130289218/bivezekojaxam-durowosizobises-kimezopo.pdfIn PDF document text
    • http://www.marmaladedental.com/uploads/1/3/0/7/130776060/5452092.pdfIn PDF document text
    • http://expressionismabstract.com/uploads/1/3/0/6/130639140/fidabe_sibokuvim_bodaf_zigimur.pdfIn PDF document text
    • http://joeandbudstowing.com/uploads/1/3/0/4/130489102/tejebu.pdfIn PDF document text
    • http://northshoreengineeringny.com/uploads/1/3/0/7/130740444/xesiga_fujudilujo_pujipisenolo_zuzuvefomu.pdfIn PDF document text
    • http://www.purplesprinklesconfectionery.com/uploads/1/3/0/4/130489572/3480475.pdfIn PDF document text
    • http://www.4mycpap.com/uploads/1/3/0/6/130639914/kepamatad_sizulos_botixokug.pdfIn PDF document text
    • http://mybaremelanin.com/uploads/1/3/0/4/130488736/d20dfa93b961a.pdfIn PDF document text
    • http://highfivecap.com/uploads/1/3/0/4/130476597/653cbd28.pdfIn PDF document text
    • http://granvillebates.com/uploads/1/3/0/4/130483230/fa304bec33.pdfIn PDF document text
    • http://naturetherapycic.com/uploads/1/3/0/5/130589219/9763420.pdfIn PDF document text
    • http://bighousesgroup.org/uploads/1/3/0/7/130740490/e8c21fb2c51.pdfIn PDF document text
    • http://mta-sts.mail.kdbug.com/uploads/1/3/0/3/130323329/9206119.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1B 8376 bytes
SHA-256: fe309a238363443192e9003a7c6294c4c5e43c88d4016ca62b2f7a2c68a8780c