Malicious PDF — malware analysis report

Static analysis result for SHA-256 84be2dcd2d54f633…

MALICIOUS

PDF

36.1 KB Authoring application: OpenOffice.org
MD5: 2be230384d9743cd797b22e6ba5ef5ed SHA-1: 0eb53f60d63470a3cc18fab697aa954e1329d718 SHA-256: 84be2dcd2d54f63387b622800b31ba63f92a104d3ac06d2b1385766a0e7f45b7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains an embedded JavaScript stream and a large number of external PDF links, indicating a link farm or redirection scheme. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly suggest malicious intent. The primary function appears to be directing users to a network of other PDF files hosted on various domains, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://westsideyogatherapy.com/uploads/1/3/0/5/130588827/vazep_lafepazuwunevop_miwatojaku.pdf
    • http://chivoremerald.org/uploads/1/3/0/6/130620173/3c6bd4d3ba.pdf
    • http://kloshe.com/uploads/1/3/0/6/130605283/bb693b17.pdf
    • http://bearsvsbabiesgame.com/uploads/1/3/0/6/130604180/kelumawobodizoda.pdf
    • http://pdxmen.net/uploads/1/3/0/7/130776133/4259731.pdf
    • http://www.william-rinn.net/uploads/1/3/0/8/130814575/00651e0aa9c6f8.pdf
    • http://mobilizerrs.com/uploads/1/3/0/7/130738591/7808105.pdf
    • http://mildlymannered.com/uploads/1/3/0/4/130483213/9844513.pdf
    • http://impactwindowreviews.com/uploads/1/3/0/8/130813141/rugudovuxokalumuxev.pdf
    • http://portalcoabana.com/uploads/1/3/0/5/130539842/kokirib.pdf
    • http://yesonzforpvsd.com/uploads/1/3/0/5/130540477/8cb03c7.pdf
    • http://rmfavorito.com/uploads/1/3/0/6/130639578/41a62d7e3.pdf
    • http://longhollow.org/uploads/1/3/0/7/130775033/negawugigajan_vejiv_lozulube.pdf
    • http://lectricwind.com/uploads/1/3/0/4/130477110/nafovogujof.pdf
    • http://mkrishnan.org/uploads/1/3/0/7/130739459/5149817.pdf
    • http://mymorethan.com/uploads/1/3/0/5/130551920/fbafedc6.pdf
    • http://soaringfish.com/uploads/1/3/0/7/130775032/2178603fd4b6e62.pdf
    • http://adsl-63-204-18-55.benefitplans.org/uploads/1/3/0/6/130639042/130639042.html#causes+of+right+lower+abdominal+pain+in+early+pregnancy
    • http://mildlymannered.com/uploads/1/3/0/4/130483213/98445

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031d0.bin
f41a477e4109301b89407688bbc92ced4c60e751be5d2b2fa62b3ae0fdf36a1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31D0 7452 bytes

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