Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a29cbe81e3b7483…

MALICIOUS

PDF

52.9 KB Authoring application: QPDF
MD5: 858a6f951aff891fed64a7e2bb31d2ba SHA-1: 6d584e536de7ccbff56a5ee8fc285ead3b7a44f1 SHA-256: 4a29cbe81e3b74833622fd4d8c7b05f7266d76aa3bd9591c99e2b002bcd32ce1
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains references to medical terms and the QPDF application, suggesting a potential lure. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious distribution intent. The primary attack pattern involves directing users to a farm of external links.

Heuristics 4

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://artfromaveganheart.com/uploads/1/3/0/6/130620519/4306764.pdf
    • http://scripttoscreenplay.com/uploads/1/3/0/5/130552017/pomasizaweg.pdf
    • http://rufgace.store/uploads/1/3/0/2/130291589/505776.pdf
    • http://tatismoving.ca/uploads/1/3/0/2/130291640/ca542d8fd5d0ce7.pdf
    • http://arbucklelakeresorts.com/uploads/1/3/0/6/130621390/4214875.pdf
    • http://thehnossaproject.com/uploads/1/3/0/7/130775405/130775405.html#nifedipine+preterm+labor+dose

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f53.bin
1ecd83ed13d9b0084eee04555ec69369a32b7cba2b6de8fd32f3e9f44545ee23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF53 8824 bytes

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