Malicious PDF — malware analysis report

Static analysis result for SHA-256 0366ed3c83dc1189…

MALICIOUS

PDF

35.8 KB Authoring application: Serif PagePlus
MD5: aa99e894883047eb2b1cff8a2b346c99 SHA-1: bd6c20bc5b04879411c74aee66733b193371969d SHA-256: 0366ed3c83dc11896c9ef74f966fdb97c8c67f418d72c576730c565902c1ecb0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm, pointing to other PDF files on various domains. This technique is often used to obscure malicious destinations or to distribute further stages of an attack. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

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://campuscrowd.in/uploads/1/3/0/4/130476740/gafopuwe.pdf
    • http://detroitgraffiticleanup.com/uploads/1/3/0/9/130969923/8226686.pdf
    • http://hi-techit.com/uploads/1/3/0/5/130589399/25bca2c.pdf
    • http://www.creativeprincesses.com/uploads/1/3/0/6/130621882/vezogufuduse.pdf
    • http://mail.babrich.com/uploads/1/3/0/4/130493893/mikemewiwixazeb_vebivijufup.pdf
    • http://whatsappnovidades.net/uploads/1/3/0/6/130621113/8608968.pdf
    • http://wickedhousewife.com/uploads/1/3/0/8/130814248/lofibijurom.pdf
    • http://shipshapedesigns.com/uploads/1/3/0/5/130542870/2646089.pdf
    • http://elgouna-holistic.com/uploads/1/3/0/7/130739578/6876292.pdf
    • http://sansouciart.com/uploads/1/3/0/6/130639162/a1b2fd.pdf
    • http://endyouthrecidivism.com/uploads/1/3/0/9/130969595/4b5c3c83f8ca853.pdf
    • http://host46.carmichaelnl.com/uploads/1/3/0/5/130539139/jakosonoz.pdf
    • http://74-123-72-182.mgwnet.com/uploads/1/3/0/7/130740558/130740558.html#cause+of+severe+stomach+ulcers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003536.bin
31fba0c7ba9f152f53c1a6760691f7455186883075b94dc8796151cee16fef66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3536 7564 bytes

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