Malicious PDF — malware analysis report

Static analysis result for SHA-256 844480f95101d71d…

MALICIOUS

PDF

44.3 KB Authoring application: SWFTools
MD5: 0ea1c56d77f582f7f82454f3ed1d2c80 SHA-1: b7ff9495453cb02b3e734f69a71ee791368125bc SHA-256: 844480f95101d71d37b877e32f95a935cc22ce8de3a9e4e7436a52361b146a2a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. This suggests a tactic to distribute content or redirect users to potentially malicious sites. The ClamAV detection and ML classifier further support its malicious nature, classifying it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. No scripts were extracted, but the extensive link farm is the primary indicator of malicious intent.

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://11parishes.com/uploads/1/3/0/7/130738949/zizuse_repub_dulexeparop.pdf
    • http://pebekukip.swealth.net/uploads/2020/01/29/ee379aaca.pdf
    • http://rooflocators.com/uploads/1/3/0/5/130551777/8344037.pdf
    • http://feliciamings.com/uploads/1/3/0/6/130621641/7546548.pdf
    • http://almultiservices.ca/uploads/1/3/0/2/130287919/3140208.pdf
    • http://mwsld.com/uploads/1/3/0/7/130738568/zujekobadovimofo.pdf
    • http://scholarlyrepository.net/uploads/1/3/0/2/130289179/4196961.pdf
    • http://momentumwomenscenter.com/uploads/1/3/0/4/130436285/61ef0c5b716eb2e.pdf
    • http://poynorhealthandwellness.com/uploads/1/3/0/3/130379627/kamulak.pdf
    • http://fortbraggltrvpark.com/uploads/1/3/0/5/130543351/0b9126.pdf
    • http://northernrailleaders.com/uploads/1/3/0/5/130539345/130539345.html#brusella+testi+nerede+yap%C4%B1l%C4%B1r
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001464.bin
0a3ad02e0034400d0c53ad6770828903d2654d65d52c83b07bb9ce67b5d27cc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1464 10548 bytes
font_01_sfnt_off00007260.bin
83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7260 2604 bytes

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