Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a726cb7a57a61e…

MALICIOUS

PDF

34.6 KB Authoring application: LibreOffice
MD5: f568c2451c69a30efbd27f1d44a54ace SHA-1: 9e1085a3b2e6cadf651b174c10e18a55f71f1365 SHA-256: c9a726cb7a57a61e5c9e37c1ac4d72ed787fe8c60612fba34f39f7eb4729d7b7
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, and the document body is heavily obfuscated, preventing further analysis of its specific lure.

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://jjbeef.com/uploads/1/3/0/6/130639110/futevaxaterix.pdf
    • http://myescondidosoccer.com/uploads/1/3/0/6/130639926/kabesanexo.pdf
    • http://code-camp.ru/uploads/1/3/0/7/130739816/3887852.pdf
    • http://zhiraf.site/uploads/1/3/0/6/130620510/7468299.pdf
    • http://eurobonus.lt/uploads/1/3/0/8/130874358/4367257.pdf
    • http://skipcoryell.com/uploads/1/3/0/7/130776413/781320.pdf
    • http://gblandarch.com/uploads/1/3/0/7/130775521/mesujozewezaseg-takapelezog-kojuboxivu-xipiza.pdf
    • http://ashleydunn.blog/uploads/1/3/0/5/130590043/eb7c1ca48.pdf
    • http://tomlinsonoutdoors.com/uploads/1/3/0/3/130313525/0f72c.pdf
    • http://allysings.com/uploads/1/3/0/6/130604798/berozejox-rajakapokaxugat-sukowomorunode-nenesaxivezanep.pdf
    • http://bloominglotuscounselingandwellness.com/uploads/1/3/0/6/130620295/wekugu_pemajasepotep_nuluvokewav_nugewulibusa.pdf
    • http://mta-sts.mx.papajoeshumblekitchen.com/uploads/1/3/0/7/130775046/7178252.pdf
    • http://renewseminars.com/uploads/1/3/0/3/130379206/xalori.pdf
    • http://tariic.com/uploads/1/3/0/6/130604512/7301466.pdf
    • http://djsacademy.com/uploads/1/3/0/9/130969045/130969045.html#digestion+of+carbohydrates+takes+place+in
    • http://bloominglotuscounselingandwellness.com/uploads/1/3/0/6/130620295/wekugu_

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f7a.bin
e4702b06ca6a058e5448cb6ab5b31c39bb53860422104f3c011cc95f24e8daf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7A 7108 bytes

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