Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6ee9778ebb802e…

MALICIOUS

PDF

63.6 KB Authoring application: Soda PDF
MD5: cdeee74e479151116f3c2433a6d3c24e SHA-1: e2aaef79e2f94e0088679854e57cdaef3a2989c4 SHA-256: ca6ee9778ebb802e1ee79c1801ef178aa400250f5bc07af5633860f6aaf9082f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body itself contains garbled text but also lists several URLs, reinforcing the link-farming behavior.

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.
  • 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://ailiks-group.org/uploads/2020/01/29/d48cecd6278a02.pdf
    • http://mrhillchemistry.co.uk/uploads/1/3/0/6/130620737/d300a521.pdf
    • http://ukulelebuyingguide.com/uploads/1/3/0/5/130551487/2224260.pdf
    • http://longhorncaverns.net/uploads/1/3/0/5/130551087/fekalusoz.pdf
    • http://netherhaughfarm.com/uploads/1/3/0/5/130546415/zatapepipamerulepi.pdf
    • http://nacionallegacy.com.br/uploads/1/3/0/4/130435670/disuruseruzotog.pdf
    • http://designsbylex.com/uploads/1/3/0/4/130489361/perip.pdf
    • http://mhernandez.org/uploads/1/3/0/2/130274305/bifinadosog.pdf
    • http://dpcontainers.net/uploads/1/3/0/6/130639030/vawes.pdf
    • http://milwaukeetoireland.com/uploads/1/3/0/5/130539908/vewakagafirogol_juwukudufagaliw_pulerifupeworis_palizebiga.pdf
    • http://camdenauctions.com/uploads/1/3/0/4/130488451/miwum.pdf
    • http://tommycookdrums.com/uploads/1/3/0/2/130270963/4882219.pdf
    • http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/7/130775109/130775109.html#abraham+maslow+hierarchy+of+needs+conclusion

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012d6.bin
041c0c900c61a794cb16d7871381b7a6ab1e07e656c5fcef03d83816f4f89de5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6 8816 bytes
font_01_sfnt_off0000a699.bin
6183679f7c1a94772e0f72ad3ad71d622b2ab2aca7f2974a4b439c0ea256b006		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA699 4200 bytes
font_02_sfnt_off0000b327.bin
f77ae30e2eec2ca3578253c0a086b7b4bc83d4d366503269d9bfd12176ed9dae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB327 16040 bytes

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