Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc15e7e0dfe31b9…

MALICIOUS

PDF

35.2 KB Created: 2020-06-05 04:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 930a6f98138105d6d8661eaaeb3b34a3 SHA-1: c4d01c151bd05c1e53e4d14ac449d8da6be45cf2 SHA-256: 3fc15e7e0dfe31b9f080a55299427620b8d5d81b6bc164a71eb128ab4139d1cc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm. The embedded URLs suggest a tactic to drive traffic to these external sites, potentially for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

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://boutique4theunique.com/uploads/1/3/0/4/130476917/130476917.html#r2d2+interactive+astromech+droid+ins PDF link annotation
    • http://annkellett.net/uploads/1/3/0/6/130621292/1358cf597949.pdfIn PDF document text
    • http://mta-sts.mail.jeancramerphotography.com/uploads/1/3/1/4/131409200/535a9c.pdfIn PDF document text
    • http://getrapidparts.com/uploads/1/3/0/5/130551630/9893351.pdfIn PDF document text
    • http://abahousecalls.com/uploads/1/3/1/3/131379447/wivusosivovo_pimigabejodo.pdfIn PDF document text
    • http://autodiscover.communityloavesjax.com/uploads/1/3/1/0/131070539/91e295.pdfIn PDF document text
    • http://cambiumhomedecor.com/uploads/1/3/0/7/130775181/mavugaxu.pdfIn PDF document text
    • http://exquisiteencounters.org/uploads/1/3/1/4/131454435/cee48512fc4d.pdfIn PDF document text
    • http://djmach.com/uploads/1/3/0/9/130969360/7386219.pdfIn PDF document text
    • http://boutique4theunique.com/uploads/1/3/0/4/130476917/terms.htmlIn PDF document text
    • http://boutique4theunique.com/uploads/1/3/0/4/130476917/dmca.htmlIn PDF document text
    • http://boutique4theunique.com/uploads/1/3/0/4/130476917/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zigozeposuze.files.wordpress.com/2020/06/kinag.pdfIn PDF document text
    • https://puvunitulev448898520.files.wordpress.com/2020/06/wulawewuzexowumibawe.pdfIn PDF document text
    • https://viledegup.files.wordpress.com/2020/06/36313344589.pdfIn PDF document text
    • https://sebakeropi953133814.files.wordpress.com/2020/06/75030279015.pdfIn PDF document text
    • https://dojepoke397954596.files.wordpress.com/2020/06/55631557211.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E01 10264 bytes
SHA-256: a463b07db3eca466b66d4744b36b60cec69225909b2a8112bf969a492a06eb9e

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