Malicious PDF — malware analysis report

Static analysis result for SHA-256 53d0801c390a25e3…

MALICIOUS

PDF

37.1 KB Created: 2020-04-12 08:27:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 965d476cf2084b6cfab31ea76ba8762d SHA-1: 4b9fc7607377ee9054125edabe47a41267d4c421 SHA-256: 53d0801c390a25e3c8afa41e0ffaadc207c2940bfb91374f1d0ae74bebbc4f45
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many pointing to PDF files hosted on various domains. This behavior is indicative of a link farm or SEO manipulation tactic, likely intended to redirect users to malicious content or to improve the search engine ranking of attacker-controlled sites. No scripts were extracted, and the document body text is largely unreadable, making it difficult to determine a more specific intent beyond link distribution.

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://kaaley.com/uploads/1/3/0/4/130483767/130483767.html#divisiones+por+tres+cifras+exactas
    • http://whybesad.com/uploads/1/3/0/7/130739982/xutov.pdf
    • http://lakeeriehealth.org/uploads/1/3/0/2/130289692/84971bbcf1.pdf
    • http://windigovinyl.com/uploads/1/3/1/3/131398338/4644239.pdf
    • http://graystoneequitypartners.com/uploads/1/3/1/3/131379904/ritusiwoli.pdf
    • http://blaqsapphirehair.com/uploads/1/3/0/3/130379424/bugopadujiliv.pdf
    • http://kymberlyburchell.ca/uploads/1/3/0/8/130874324/6fe9b60e7.pdf
    • http://eaa70.com/uploads/1/3/0/2/130287937/dovatoz.pdf
    • http://melissawrightlmt.com/uploads/1/3/1/1/131164021/vewuj-tanasujo-saloxo-napefuwuper.pdf
    • http://objectsofintention.net/uploads/1/3/0/4/130483736/sewuvege_devanozamen_wibelobu_beniwulogo.pdf
    • http://teamdropshiponline.com/uploads/1/3/1/4/131406433/4370195.pdf
    • http://springglade.net/uploads/1/3/0/9/130969933/lelodapiku_jakeketuranix.pdf
    • http://contentcoop.org/uploads/1/3/0/2/130271207/5191067.pdf
    • http://kumpeldogs.com/uploads/1/3/0/2/130291531/6911611.pdf
    • http://kflantroy.people.ua.edu/uploads/1/3/0/2/130288391/9520649.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_off0000671d.bin
15206e3b3492a9f183a9a118d146a4b1bd49bbb13d76134f3e11857344b5bd22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671D 8648 bytes

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