Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8cce5cd328ed56…

MALICIOUS

PDF

37.6 KB Authoring application: Mobipocket Creator
MD5: 295d007f55b47fef26a3cad0224a1036 SHA-1: f9d1e3f5a64b3c41704f75ec72dfe9dbd1483f34 SHA-256: 9a8cce5cd328ed56ce927d78030177b0b83d0dab30333ac5946074c50117a7e9
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The primary function appears to be directing users to a multitude of external PDF files hosted on various domains, likely for SEO manipulation or to serve as a distribution point for further malicious content.

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://firezoneschaumburg.com/uploads/1/3/0/6/130604580/fadokuvoxiwemejimu.pdf
    • http://980pigeonhillroad.com/uploads/1/3/0/5/130541272/6101594.pdf
    • http://mysticgardentw.com/uploads/1/3/0/5/130550724/luxudodafelesoz.pdf
    • http://writelifecoaching.com/uploads/1/3/0/6/130620685/rudofegifeve-tifeberoxamuti-jixusivomebadar.pdf
    • http://colombiahumanrights.org/uploads/1/3/0/7/130776113/jikop-tolilis-vuzefik.pdf
    • http://bonjourbienvenue.com/uploads/1/3/0/7/130738730/xekegolegafisifemet.pdf
    • http://needavac.com/uploads/1/3/0/5/130589009/bixijuxadekaj_barogamaxuj.pdf
    • http://caeciliesvensson.com/uploads/1/3/0/4/130476216/gawegelujobizem.pdf
    • http://openpaw.net/uploads/1/3/0/5/130545087/4068928.pdf
    • http://azmendinglives.com/uploads/1/3/0/7/130776067/gelavitowe_sesax_vidusuwe_vomujetuzaz.pdf
    • http://cdconggiaovietnamvic.org/uploads/1/3/0/3/130323600/03e17c.pdf
    • http://mychinesewatch.com/uploads/1/3/0/5/130588594/130588594.html#patellar+tendon+graft+acl+rehab
    • http://bonjourbienvenue.com/uploads/1/3/0/7/130738730/xekeg

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003e77.bin
336c984dc95e49076e4beac2f17bf844b268e1d031c89a2c40591b3c77a25fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E77 6988 bytes

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