Malicious PDF — malware analysis report

Static analysis result for SHA-256 159064424cf7b1c0…

MALICIOUS

PDF

43.1 KB Authoring application: Adobe PDF Library 9.0
MD5: 054346087a67627b46a3f02aa8c661c2 SHA-1: c789eb3cc551c4993dd3c946ca9d650db95fee5c SHA-256: 159064424cf7b1c067693cfd05e765454490c41344129370bdbf30e944e3390e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to distribute malicious content or redirect users to phishing sites. While no scripts were explicitly extracted, the nature of the link farm and the ML classifier output strongly indicate malicious intent, likely related to phishing or malware distribution.

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://junecosmetics.co/uploads/1/3/0/6/130621450/ac03b51.pdf
    • http://webdisk.cms-ma.com/uploads/1/3/0/5/130539432/b5bb9c01a04cf6.pdf
    • http://mphibbard.com/uploads/1/3/0/6/130604769/d2792cc8e20.pdf
    • http://www.aspenridgeslavelake.com/uploads/1/3/0/9/130969405/666565.pdf
    • http://www.allenbonde.com/uploads/1/3/0/3/130379380/jopesadetomawazo.pdf
    • http://rockymountaincableshow.com/uploads/1/3/0/5/130551081/4bfedebccf29a28.pdf
    • http://batteryparkpreschool.com/uploads/1/3/0/7/130738567/1640333.pdf
    • http://www.trilogytradingco.com/uploads/1/3/0/5/130588199/319e9056c.pdf
    • http://eegtube.com/uploads/1/3/0/5/130588425/bokirupugogumamev.pdf
    • http://beradiantlyraw.com/uploads/1/3/0/7/130738940/gikipefemotagipa.pdf
    • http://webmail.shanikajforeside.com/uploads/1/3/0/5/130588508/564487.pdf
    • http://mta-sts.mx.papajoeshumblekitchen.com/uploads/1/3/0/4/130492963/130492963.html#apache+airflow+documentation+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fcd.bin
0f9e22a4c934251940dcbf79d703e2973b6f3c2d1fe597e4a791c0cf2ea88c38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCD 8844 bytes

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