Malicious PDF — malware analysis report

Static analysis result for SHA-256 a77652914d947964…

MALICIOUS

PDF

42.1 KB Created: 2020-03-07 09:51:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 75c44a3dc6790ead21a424cb965e7b61 SHA-1: 795d7f3a3b04575e0576de4f261207c7d0348495 SHA-256: a77652914d947964c66a4ff0f1e1e7cabb77299720b22d2e637b5b0843d21d6e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body, though partially corrupted, contains text related to 'Dieta para hernia de hiato e refluxo' and mentions wkhtmltopdf, indicating it was likely generated programmatically. The primary goal appears to be directing users to a vast collection of other PDF files hosted across numerous domains.

Heuristics 3

  • 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
  • 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://sensitiveminds.org/uploads/1/3/0/4/130436127/130436127.html#dieta+para+hernia+de+hiato+e+refluxo
    • http://comecleandetail.com/uploads/1/3/0/5/130551991/70fb7d6eb05.pdf
    • http://chickenmanofomaha.com/uploads/1/3/0/5/130541600/gotujedebal.pdf
    • http://guardiantraining.co.uk/uploads/1/3/0/7/130776486/77a170100e81.pdf
    • http://mta-sts.mail.musicmansion.org/uploads/1/3/0/6/130604487/siveronekivava.pdf
    • http://yorkshireweddingboutique.co.uk/uploads/1/3/0/4/130488750/7749516.pdf
    • http://northeastemergencyconsulants.com/uploads/1/3/0/6/130620878/307220.pdf
    • http://enthusiasticallydickgardner.com/uploads/1/3/0/4/130483862/8353494.pdf
    • http://rosskelly.net/uploads/1/3/0/7/130739175/4818945.pdf
    • http://plumbersupplies.net/uploads/1/3/0/5/130590368/6278655.pdf
    • http://deirdreswinson.com/uploads/1/3/0/4/130435746/675975.pdf
    • http://amandapetersenfails.com/uploads/1/3/0/4/130483122/nijavejubaxe-mipikuz-bagawukagepejok.pdf
    • http://www.livingwonders.com.au/uploads/1/3/0/2/130289304/82f386c.pdf
    • http://famouscutzbarbershop.com/uploads/1/3/0/6/130605472/terojoguzad.pdf
    • http://www.comparibuilt.com/uploads/1/3/0/3/130323635/jugoxere-bedigagizixaro-zopulaxid-texafep.pdf
    • http://rethinkautismneeds.com/uploads/1/3/0/7/130739147/gogasekeweredi.pdf
    • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bdd.bin
6c3ca28b07e281e7e7ae8f2005b654a05bd34379d95ad055c41cda83b5081db3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDD 9460 bytes

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