Malicious PDF — malware analysis report

Static analysis result for SHA-256 79043b37bab458d5…

MALICIOUS

PDF

39.1 KB Authoring application: pstoedit
MD5: c871d6816c2f14dfe471d4e1c9a1d916 SHA-1: 452c38f848577d4f3c8d4712114dcbdf262b54c6 SHA-256: 79043b37bab458d56c9bd007c5361e48ada05f404e6183dc312e547d63579e1f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by multiple heuristics, including a critical rule for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains numerous URLs, indicating a likely attempt to redirect users to malicious content. The presence of a link farm suggests a broad phishing or malware distribution campaign.

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://taoradionetwork.com/uploads/1/3/0/5/130544384/9435601.pdf
    • http://taurusbulldesigns.com/uploads/1/3/0/4/130483230/mifusibidowewebuwiw.pdf
    • http://pixelbootcamp.net/uploads/1/3/0/5/130588960/zavixepopazodez.pdf
    • http://cutcliffes.com/uploads/1/3/0/5/130541186/fibodaviluwotodeti.pdf
    • http://1001emotions.com/uploads/1/3/0/2/130291589/274444.pdf
    • http://classicmassagestudio.com/uploads/1/3/0/5/130588678/d4f8fc58576.pdf
    • http://shapnas.com/uploads/1/3/0/6/130605393/3551375.pdf
    • http://missioncovenantyouth.org/uploads/1/3/0/4/130478057/130478057.html#acls+guidelines+for+cva

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012bb.bin
2af939766bfc6f13b60efa875abb580376ade902d2886d99b1327b2a3c2d9418		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB 8612 bytes

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