Malicious PDF — malware analysis report

Static analysis result for SHA-256 139aaaf534d34a3d…

MALICIOUS

PDF

27.8 KB Authoring application: OpenOffice Draw
MD5: 5fb2bcf5354b6727b4aab8ea9b5eafda SHA-1: 4bdf22615c3920f4dd5c99264d088b30f4e11fcb SHA-256: 139aaaf534d34a3d27d8adbbd05a1cdb11ff6f4826b3f518c555f4c7a8c1961a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs disguised as links to technical documentation, a common lure for phishing or scam operations. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a large number of external links, suggesting an attempt to drive traffic to potentially malicious sites. While no scripts were explicitly extracted, the nature of the embedded links and the ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' strongly suggest a phishing or traffic-driving intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://drstellamedicalintuition.com/uploads/1/3/0/6/130620796/9035590.pdf
    • http://789384669264936532.org/uploads/1/3/0/4/130488248/rodapabiwixol.pdf
    • http://woodlandstuition.com/uploads/1/3/0/2/130272086/xutobunaranimixida.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/6/130639222/130639222.html#data+acquisition%2Fswitch+unit+34970a

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f69.bin
15a1e993c9062bba05f9254856d36c0183a1897b6f1b36b5dd5faef5b594db3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF69 7524 bytes

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