Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d7f3ef6d0429eb…

MALICIOUS

PDF

35.9 KB Authoring application: Scribus
MD5: f41b844bd149a5ff3868a43d9967b17d SHA-1: a3291ac1a751de8b90cf08451dce809bfacf3cfe SHA-256: 29d7f3ef6d0429eba37f9f32d1fcdb149382b6a1689b718517732517e60d7460
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are likely part of a phishing or redirection scheme to distribute further malware or lead users to 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://zumbatinleypark.com/uploads/1/3/0/4/130488983/727878.pdf
    • http://swimprofessionals.co.nz/uploads/1/3/0/4/130476887/rumivad.pdf
    • http://heythatsprettyneat.com/uploads/1/3/0/5/130589227/6231181.pdf
    • http://morristem.com/uploads/1/3/0/6/130620751/luzurikoxufa-bipifap-madodabelu-wedawonusajepet.pdf
    • http://balancedwaw.com/uploads/1/3/0/5/130588370/5168059.pdf
    • http://csbcorner.com/uploads/1/3/0/4/130435821/ladevebag-xorev.pdf
    • http://thehnossaproject.com/uploads/1/3/0/2/130272325/130272325.html#dynamic+stative+verb+exercises

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000110a.bin
2bb4ed6de84bafb14b3c58369feb93bbda280ad369385cec518dc761df1d7ee8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110A 8480 bytes

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