Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c410d53776d594…

MALICIOUS

PDF

35.3 KB Authoring application: Solid Converter PDF
MD5: ac2f59fd1c9c4e93da352f6497aca381 SHA-1: 4a31156dd72204711c468bb61d25e3e35605d6c3 SHA-256: 76c410d53776d594b4b84f384b013f65881f7144348b66bdb8fce3587116e299
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate maliciousness, classifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs likely serve as a distribution mechanism for further malicious content or phishing pages. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ezcards.com/uploads/1/3/0/2/130289611/9690166.pdf
    • http://kentuckyroutezero.net/uploads/1/3/0/6/130620584/4819971.pdf
    • http://www.writtrestoration.com/uploads/1/3/0/6/130620265/3340861.pdf
    • http://eng.golnazbehrouznia.com/uploads/1/3/0/4/130483809/lifipojexisegi.pdf
    • http://delucaconsulting.se/uploads/1/3/0/7/130775639/2005118.pdf
    • http://recycledbags.net/uploads/1/3/0/6/130620512/sogujirenoxe.pdf
    • http://estatesalecompanyrochester.com/uploads/1/3/0/6/130620472/zatisupibige.pdf
    • http://www.allsaintsandmartyrs.org.uk/uploads/1/3/0/5/130550992/2855052.pdf
    • http://mexiitem.com/uploads/1/3/0/6/130603793/802e93dc3.pdf
    • http://lakz.pamperpetcare.com/uploads/1/3/0/4/130483207/6172929.pdf
    • http://gassersphoto.com/uploads/1/3/0/7/130740497/a2bc4bd4b0027.pdf
    • http://creatingtheconditionsfortransformation.com/uploads/1/3/0/3/130313153/luvoluzo_jekowenojesedej.pdf
    • http://www.thewisent.com/uploads/1/3/0/6/130640159/f90621a74e.pdf
    • http://winthropdocs.com/uploads/1/3/0/6/130639885/zodefufatapiw_tutibef.pdf
    • http://ibnem.slpny.com/uploads/1/3/0/4/130483320/130483320.html#first+and+second+industrial+revolution+inventions

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003196.bin
ce5001b54bb5962fc8cbdff33f9aa323ef1cf6eb6b8d01a17812d58c9d1ca21e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3196 7340 bytes

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