Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bfd8a0d36c56799…

MALICIOUS

PDF

65.6 KB Created: 2020-04-12 14:19:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a910f1b35aa90a9a93b5cfbbb00b5622 SHA-1: 8dd76acc7d5c2c2bfebdd46479247c486cdf2b2f SHA-256: 1bfd8a0d36c5679927c43d4f70de04e941c8a61f07c806fce4b4c3e400d27f8d
92 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. The document body, though partially corrupted, contains a URL that points to a potentially malicious resource. The primary function appears to be acting as a link farm, directing users to a large number of other PDF files hosted across various domains, which is a common tactic for SEO manipulation or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://thevoodooboneladyvoodooshop.com/uploads/1/3/0/3/130313541/130313541.html#sindrome+de+ovario+poliquistico+guia+de+referencia+rapida
    • http://wildturkeycantina.com/uploads/1/3/0/5/130539517/vofebubunugif.pdf
    • http://gayinstigator.com/uploads/1/3/0/3/130323764/773e080d6.pdf
    • http://sobnovaorganizacao.com/uploads/1/3/0/6/130604552/wolilifisewukazowuz.pdf
    • http://ruinyourlife.xyz/uploads/1/3/0/2/130272955/xigen.pdf
    • http://texangit.com/uploads/1/3/1/6/131606165/5f104f.pdf
    • http://janorkyproperties.com/uploads/1/3/0/4/130435929/5883936.pdf
    • http://womenonpar.com/uploads/1/3/0/2/130287866/marupifofukelamige.pdf
    • http://drbrockettewagner.com/uploads/1/3/0/6/130621719/rakezinam_tevif.pdf
    • http://crownhousekeeping.com/uploads/1/3/0/6/130639746/4d2f86ddec2f3d4.pdf
    • http://globalstrangers.com/uploads/1/3/0/6/130639943/8004831.pdf
    • http://jamesbgriffinforcongress.org/uploads/1/3/0/2/130289682/samafakeredujewu.pdf
    • http://eggerspainting.com/uploads/1/3/0/7/130776776/14412cf335d288f.pdf
    • http://the-lewis-consulting-group.com/uploads/1/3/1/0/131070692/vinufodikadajevu.pdf
    • http://gendernaturalism.org/uploads/1/3/0/8/130873912/1d3fe05a.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd23.bin
e9f72540effac119a66c53ebd4d1149178be9b67125f1b22eb42ce82758ed586		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD23 9128 bytes
font_01_sfnt_off0000ed6b.bin
4d9ec2aec8f1ca6bebe1b56492fd55a77bba3a6e98efb76508c1b835d4eb9912		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED6B 2860 bytes

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