Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3222539374b3312…

MALICIOUS

PDF

41.7 KB Authoring application: SWFTools
MD5: 9f1ee9e041a6df3e0f4c5aabf5e9532d SHA-1: f2c61484264a5f01d416a374740450f7a3ff9d37 SHA-256: b3222539374b3312045f3a7d74d63cb70145f0931efe44e6b2c80195e34a7f37
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, suggesting a phishing or SEO poisoning attack. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing intent. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious activity.

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://thesocceridcamp.com/uploads/1/3/0/4/130476066/muxofugag_peneg.pdf
    • http://paceprintschina.com/uploads/1/3/0/2/130287727/6213167.pdf
    • http://www.louisianaudc.org/uploads/1/3/0/5/130588749/babazipotojisuniv.pdf
    • http://hypocrisyofdisco.com/uploads/1/3/0/7/130739056/417241.pdf
    • http://shopabz.com/uploads/1/3/0/4/130489090/8315828.pdf
    • http://www.jolenes-fashions.com/uploads/1/3/0/7/130775275/3c01779920.pdf
    • http://thesystem9training.com/uploads/1/3/0/5/130550729/goxuzipaxigir.pdf
    • http://studiosix.fr/uploads/1/3/0/4/130483469/zupikuluvivab.pdf
    • http://crankshaftmotorcarclub.com/uploads/1/3/0/6/130620684/duwepowetut.pdf
    • http://opforarmory.com/uploads/1/3/0/6/130639946/514855.pdf
    • http://regular-duty.com/uploads/1/3/0/7/130776521/3923695.pdf
    • http://mesabimusicaltheatre.com/uploads/1/3/0/4/130488831/98a8e3d85a3bb0.pdf
    • http://computatumservices.org/uploads/1/3/0/7/130739504/viwoxamex.pdf
    • http://tonyvalado.com/uploads/1/3/0/6/130621906/zivaruvimuteniregij.pdf
    • http://pre5jn.bdgct.com/uploads/1/3/0/2/130289209/130289209.html#starburst+flower+crochet+blanket+pattern
    • http://studiosix.fr/uploads/1/3/0/4/130483469/zupikuluvivab

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003b7e.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B7E 2616 bytes
font_01_sfnt_off0000477b.bin
02a49e63111daa4debc2fae859cd60c57ad98f61d290d6054d72b28445c15e6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x477B 8576 bytes

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