Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a881f8ca9f21e90…

MALICIOUS

PDF

38.9 KB Created: 2020-05-24 07:05:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59a3beaa7b923bada45f674ba324bcbb SHA-1: 7275e2c97bee820e80b6d97f7306de0e7d654617 SHA-256: 3a881f8ca9f21e90a296f23fe76c12362a8c5508ebd9b19742f44e01663789cc
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential link farm. The document body contains seemingly random text and metadata, but the primary malicious activity is the mass of outbound links.

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://threestreamsenergypartners.com/uploads/1/3/0/4/130436018/130436018.html#nikkor+50mm+f1+4+manual
    • http://donnafitzfitlife.com/uploads/1/3/0/4/130488301/8766801.pdf
    • http://gzero.blog/uploads/1/3/1/6/131607254/7747737.pdf
    • http://studiormusic.com/uploads/1/3/1/4/131408092/620d363e.pdf
    • http://emmausroadpegs.com/uploads/1/3/0/7/130740573/0e2a8.pdf
    • http://greenroomtheatercompany.com/uploads/1/3/0/6/130604521/987054.pdf
    • http://loveblubags.com/uploads/1/3/0/6/130604391/fd1190af.pdf
    • http://casanovalaw.net/uploads/1/3/0/6/130604658/143a3.pdf
    • http://nukols.com/uploads/1/3/0/6/130621641/6196508.pdf
    • http://iemch.com/uploads/1/3/0/2/130271083/16b18bfce4fa3d.pdf
    • http://a2z-performance.com/uploads/1/3/0/2/130288380/12909124.pdf
    • http://simplebarsoap.com/uploads/1/3/1/0/131070774/4571080.pdf
    • http://soberaddictpod.com/uploads/1/3/0/4/130488365/b3359533f.pdf
    • http://hattitudeproductions.com/uploads/1/3/0/2/130272585/3994968.pdf
    • http://blush-roseonline.com/uploads/1/3/0/6/130604874/2eea68.pdf
    • http://detourfromtheeveryday.com/uploads/1/3/1/3/131398374/5362320.pdf
    • http://cpanel.usasubs.com/uploads/1/3/1/3/131380021/dolawadinev_jibuse_mojatuxone_sewipepuba.pdf
    • http://dreamscapestudios83.com/uploads/1/3/0/4/130476733/7012458.pdf
    • http://sugarsaiko.com/uploads/1/3/0/4/130483542/7252281.pdf
    • http://lofibeauty.com/uploads/1/3/1/8/131871710/dolejasiguku.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_off00006b0e.bin
c4c64cb7d9c54e989b89a1f5c72c705269f92b49c5cf834402becbc6241534cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0E 10872 bytes

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