Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b7f8d98ab23615c…

MALICIOUS

PDF

40.9 KB Authoring application: ImageMagick
MD5: 1d9e31aa9404b9cd174509b9f38b6953 SHA-1: 1caeaa629b3915747ec32910fa6fc88aa55d882c SHA-256: 0b7f8d98ab23615c859e7b977cbf44c6a1dbbb6b07914d14f288e8f68f0f9a1e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the primary attack vector appears to be the mass distribution of links.

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://sgconsultation.com/uploads/1/3/0/6/130620576/dilenokawegona.pdf
    • http://rek.se/uploads/1/3/0/5/130551962/6908604.pdf
    • http://piedrasvivasiglesia.org/uploads/1/3/0/5/130551607/bawenod_xixugifox.pdf
    • http://californiahydrogenwater.com/uploads/1/3/0/6/130639747/vozuweforaleja.pdf
    • http://rapidcitywebsites.com/uploads/1/3/0/7/130775383/28f7844b.pdf
    • http://romanpublications.com/uploads/1/3/0/6/130620537/225d12.pdf
    • http://formavote.com/uploads/1/3/0/8/130874670/246d631b6.pdf
    • http://lubbockministry.com/uploads/1/3/0/6/130604373/87dcc.pdf
    • http://knolling.club/uploads/1/3/0/5/130543280/ponixivububigejepefe.pdf
    • http://easytobuyahouse.com/uploads/1/3/0/5/130540525/5f2bac1295a1.pdf
    • http://theelfbox.com/uploads/1/3/0/6/130604319/130604319.html#clerical+award+2010+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000127a.bin
10b863923ba8c0d7e0860db2803c2332816105a69e05116cfd2dfd62cec238df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127A 8884 bytes

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