Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec9ed00da9a40cb…

MALICIOUS

PDF

35.8 KB Authoring application: PDFedit
MD5: 197e9a316b420cbe21d2e226904b094f SHA-1: ce25aa955eda0c51bc2bfa96148e279a419d4c92 SHA-256: 0ec9ed00da9a40cb082a728c657c2c1aa1a07b38cc3703e466eec1cbcc580909
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or SEO spam. While no scripts were explicitly extracted, the embedded URLs suggest an attempt to redirect users to malicious content or further stages of an attack.

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://mail.calvarynewlifesa.org/uploads/1/3/0/5/130543166/delosovuzun_jigopoz_vaner_jizenob.pdf
    • http://nesyb.net/uploads/1/3/0/6/130620691/tosadosurubi.pdf
    • http://anonymousbananapumkinspice101.com/uploads/1/3/0/4/130488831/4d06b0a6.pdf
    • http://whatsapp-computer.com/uploads/1/3/0/6/130622103/savatano.pdf
    • http://aviplan.info/uploads/1/3/0/8/130813804/nubuvufo.pdf
    • http://msjacques-purdysclassroom.com/uploads/1/3/0/4/130476760/badodufed-xufenoruxoro.pdf
    • http://conjecturebooks.org/uploads/1/3/0/7/130738748/8889091.pdf
    • http://superiorcartcompany.com/uploads/1/3/0/7/130776175/9284471.pdf
    • http://oxfordsupertutors.com/uploads/1/3/0/3/130313253/8907274.pdf
    • http://www.doubleupoutfittersllc.com/uploads/1/3/0/4/130483136/8ab22ff.pdf
    • http://www.munir-zakee-1.solightpro.com/uploads/1/3/0/4/130483118/lejorawuva_xeponelu_zezeg.pdf
    • http://opfor.us/uploads/1/3/0/5/130588857/xugamefopetiwuxulox.pdf
    • http://avidaenglish.com/uploads/1/3/0/4/130488179/130488179.html#upper+gi+bleed+ppi+treatment

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000335f.bin
6e5bf0053a9e000f6f0cb1af9146e9a59a159a5b514caeaceeaafa73ad37d298		 pdf-font-stream PDF embedded font (sfnt) at offset 0x335F 8112 bytes

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