Malicious PDF — malware analysis report

Static analysis result for SHA-256 363f8d325da55aa0…

MALICIOUS

PDF

40.2 KB Authoring application: OpenOffice.org
MD5: a660ac35acab488c67ddf3cf0b557f89 SHA-1: 3b4d5c437ab87f16ffd742102bde2032c711b653 SHA-256: 363f8d325da55aa079e04eac1e5d01ce5912ef832854000fb125fa98ac04fbec
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate maliciousness, consistent with a phishing or link-farming attack pattern. No scripts were extracted from this sample, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://cathystronach.com/uploads/1/3/0/6/130639808/4659244.pdf
    • http://www.cccabbrefs.com/uploads/1/3/0/3/130379597/4136382.pdf
    • http://sweatingstyle.com/uploads/1/3/0/4/130489006/3757011.pdf
    • http://kitchensdoorsanddrawers.com/uploads/1/3/0/2/130271132/871187e2b3e18b.pdf
    • http://becausegoodness.com/uploads/1/3/0/6/130605422/jitivalekebik_nidotixajiw_dojasivepifev.pdf
    • http://nomi-online.com/uploads/1/3/0/4/130476083/tukile.pdf
    • http://www.lilianhaney.com/uploads/1/3/0/6/130621944/fuvufosaraviror.pdf
    • http://kaisamccambridge.net/uploads/1/3/0/5/130551331/sibogopitavebutud.pdf
    • http://phktsda.com/uploads/1/3/0/6/130639028/7289003.pdf
    • http://www.funcreamor.org/uploads/1/3/0/9/130969430/guripuvarovisokaju.pdf
    • http://beesea.com/uploads/1/3/0/6/130639209/700105.pdf
    • http://accidentattorneypocatello.com/uploads/1/3/0/5/130539479/vutawesibog-kolixom-lunirazokolu.pdf
    • http://interactivehq.com/uploads/1/3/0/4/130489262/a4436983.pdf
    • http://westwindcafe.com/uploads/1/3/0/7/130776185/1775388.pdf
    • http://openmasajes.net/uploads/1/3/0/6/130604694/2078107.pdf
    • http://service.fm/uploads/1/3/0/5/130543761/lafavizutojupeb.pdf
    • http://project58serve.com/uploads/1/3/0/5/130589064/6a78470c03a8c.pdf
    • http://socialjusticewitch.com/uploads/1/3/0/8/130814360/5601411.pdf
    • http://croninsformwork.com/uploads/1/3/0/8/130873786/3820935.pdf
    • http://coffeechristian.com/uploads/1/3/0/6/130639404/pimet.pdf
    • http://geekpursuits.org/uploads/1/3/0/6/130604527/wefuniwem.pdf
    • http://somorra.com/uploads/1/3/0/2/130291783/telimikewurosi_sexewunixe_memamar.pdf
    • http://conjecturellc.com/uploads/1/3/0/2/130289765/7563212.pdf
    • http://cabinetmakersipswich.com.au/uploads/1/3/0/5/130550887/wigose.pdf
    • http://olmecaclean.devsite-1.com/uploads/1/3/1/0/131070820/131070820.html#ssc+stenographer+previous+papers+with+solutions+in+hindi+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000393b.bin
328bd07e1086db4410577e496b6663a8401348f979c9640bb57171bfd6101ecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x393B 8156 bytes

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