Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef6d665e6057f19…

MALICIOUS

PDF

33.6 KB Authoring application: Poppler-utils
MD5: ea0757b797e28ad70e62828ea3683ca3 SHA-1: 50d241d376571d70d1f2dbedbdda7334960ab5ac SHA-256: 9ef6d665e6057f196e827b5a95ab26a922337b6053b36d61baab6499bcfcb857
152 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. This suggests a phishing or malware distribution campaign leveraging SEO techniques. The ClamAV detection and ML classifier further support the malicious nature of the file. No scripts were extracted, limiting the ability to determine specific execution behaviors.

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://shannaspetsupply.com/uploads/1/3/0/5/130539097/dipugagavebi.pdf
    • http://cowle.de/uploads/1/3/0/5/130590323/xudina.pdf
    • http://hannahjpark.com/uploads/1/3/0/2/130272388/32e37ff6e9d.pdf
    • http://mumi-dol.ru/uploads/2020/01/28/kanarij_romomuxamijo.pdf
    • https://jusefino.weebly.com/uploads/1/3/0/5/130589345/9373574.pdf
    • http://shannonmackinnon.weebly.com/uploads/1/3/0/3/130313539/b28a513ac9fa1.pdf
    • http://colombe.org/uploads/1/3/0/6/130604544/7303363.pdf
    • http://anatomyfinalproject.com/uploads/1/3/0/5/130590739/347c9.pdf
    • http://zichain.pro/uploads/2020/01/28/pepilazozoxudu-wuzotoxupelaj.pdf
    • http://rio-auto.ru/uploads/2020/01/27/diwilifiredigafof.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/6/130620268/130620268.html#free+sheet+piano

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000113f.bin
eb0a6609add8389fab303158bd500aa43f71b685d6a6ca8a5a860ac1f9cc0df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113F 8612 bytes

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