Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e1377938f1642a…

MALICIOUS

PDF

31.9 KB Authoring application: ImageMagick
MD5: a76ea42cf5bde3e7bb46453a46b74c3d SHA-1: d0d19af92e14cf4cb0868bb97be5a7e880d1cd60 SHA-256: 76e1377938f1642a47e64dbd9f66c0ad3efeba56029d510976c88d041f7736e6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier, exhibiting a critical heuristic for a PDF link farm. The document body contains obfuscated text, but the primary malicious activity appears to be the embedding of numerous external links to other PDF files hosted on various domains. These links likely serve to distribute malware or engage in SEO manipulation.

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://eurekarally.com.au/uploads/1/3/0/4/130436250/7318e4d69.pdf
    • http://theburrowclub.com/uploads/1/3/0/7/130775391/tefekujine.pdf
    • http://barsportpobla.com/uploads/1/3/0/6/130639453/0136c65617cf.pdf
    • http://takeastandforjustice.org/uploads/1/3/0/4/130483239/7179767.pdf
    • http://websiteseoshop.com/uploads/1/3/0/6/130621613/5167378.pdf
    • http://animalandiagta.com/uploads/1/3/0/7/130775531/72b2610983d.pdf
    • http://project-black.net/uploads/1/3/0/5/130551256/e70b2d.pdf
    • http://postmaster.inekehamoen.nl/uploads/1/3/0/2/130272369/9669811.pdf
    • http://oldmilltradingco.shop/uploads/1/3/0/5/130589345/490398.pdf
    • http://highmore.shop/uploads/1/3/0/7/130740175/mawej.pdf
    • http://myguyinvegas.com/uploads/1/3/0/7/130739291/diverikagulovu.pdf
    • http://scubaphone.org/uploads/1/3/0/6/130639052/vikuzibomirugogoxa.pdf
    • http://www.dwtsetx.com/uploads/1/3/0/8/130814245/7588059.pdf
    • http://pomjc2.bdgct.com/uploads/1/3/0/5/130589128/130589128.html#active+passive+voice+past+perfect+continuous

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000262c.bin
37664a7c8ccbb0a418a0a9ec07e1b5fd65c944f9e1e238cdf04345f27611212a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x262C 7040 bytes

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