Malicious PDF — malware analysis report

Static analysis result for SHA-256 8467eab274f5d8c8…

MALICIOUS

PDF

39.7 KB Authoring application: PDF Studio
MD5: 0db4e0e5448244ff03b707dd4a422a14 SHA-1: 00e7d5e0fb2e92a6adb777c355e538b0f1cf25dc SHA-256: 8467eab274f5d8c8bae6cc0f5a9e79ead6787f7e003c2678e3571d8e88981333
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as Pdf.Phishing.TtraffRobotInstall. The document body, though partially corrupted, contains references to these external URLs, reinforcing the link farm tactic. The primary attack pattern involves redirecting users to potentially malicious content hosted on these external domains.

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://robziman.com/uploads/1/3/0/2/130272909/putijux.pdf
    • https://lelefunu.weebly.com/uploads/1/3/0/6/130604306/73a0b2d2bb0fe0.pdf
    • http://ethreemotors.com/uploads/1/3/0/7/130738740/bibopofurolopewe.pdf
    • http://afhe.org.au/uploads/1/3/0/2/130288565/jomekewat.pdf
    • http://scripttoscreenplay.com/uploads/1/3/0/4/130476661/5971326.pdf
    • https://lizofejuxofej.weebly.com/uploads/1/3/0/4/130488227/zetegepebibedafu.pdf
    • http://policetrailer.com/uploads/1/3/0/6/130620916/130620916.html#speaking+activities+for+esl+classes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010e5.bin
0bc149c9ccd1896a8a5fa9369a38f0fd7d906786c87effce9258423f451c8ac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E5 8244 bytes

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