Malicious PDF — malware analysis report

Static analysis result for SHA-256 a801b290a2eff693…

MALICIOUS

PDF

37.0 KB Authoring application: OpenOffice.org
MD5: c86e262a863fc2ee0943d07f5db06137 SHA-1: 6892b1e51b0b7167d46a27c8cc327ff4898f5996 SHA-256: a801b290a2eff6933ae00e117cb8f675e474f80f7f06fc47b3d9c8fdf171ece4
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to other PDF files, masquerading as study material. This behavior is indicative of a link farm or a phishing lure designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest 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://nomomani.com/uploads/1/3/0/5/130550742/2fac3b5.pdf
    • http://smart-touchscreen.com/uploads/1/3/0/5/130551058/4897429.pdf
    • http://itavuvu.com/uploads/1/3/0/6/130604150/zivisuje.pdf
    • http://pvcs2019.org/uploads/1/3/0/6/130640033/65d54.pdf
    • http://redondobeachheating.net/uploads/1/3/0/5/130543466/70211.pdf
    • http://acs-kw.com/uploads/1/3/0/7/130776275/8505577.pdf
    • http://bcummings4.com/uploads/1/3/0/6/130605069/lojuxevifedobolot.pdf
    • http://michaudwellness.com/uploads/1/3/0/7/130775862/130775862.html#acca+ifrs+diploma+study+material+free+download+2020+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012e0.bin
b8c7d4df83e4edb6462c7a616eb51f8a763e3826ccf2c1c302361bccff5912d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E0 8152 bytes

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