Malicious PDF — malware analysis report

Static analysis result for SHA-256 221cd40cea6ba804…

MALICIOUS

PDF

33.2 KB Authoring application: Mobipocket Creator
MD5: c0a613cf508480027c6b9db3ae917ffe SHA-1: 3ef45864c0d1e03e931a3e858c98b60876e1f202 SHA-256: 221cd40cea6ba804ca086de398d73c778788a1a6c4247436315261ce393ca69b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which are likely used to redirect users to malicious sites. The document body, though partially obfuscated, contains text related to French administrative documents ('Attestation d'hébergement prefecture mayotte pdf'), suggesting a social engineering lure. ClamAV detection and ML classification further support its malicious nature.

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://poppyandrose.co.uk/uploads/1/3/0/4/130488304/71b5f9.pdf
    • http://mountaintrafficcircle.com/uploads/1/3/0/5/130550925/biweb-jegixobome-lujewi.pdf
    • http://palmoil-expo.com/uploads/1/3/0/6/130604421/1627688.pdf
    • http://aikotanaka.com/uploads/1/3/0/7/130739204/niwerewex.pdf
    • http://kiskibands.org/uploads/1/3/0/3/130324065/fc3fee753bb2f4.pdf
    • http://talktograndma.net/uploads/1/3/0/6/130621063/zuwaza.pdf
    • http://tcsonline.net/uploads/1/3/0/7/130776592/130776592.html#attestation+d%27+h%C3%A9bergement+prefecture+mayotte+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000112b.bin
f7134380bc9250e8d3995dad789fa769f6e98e7c73d2dd92a1c671c407d5953b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112B 9040 bytes

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