Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10dea475b1ac2da…

MALICIOUS

PDF

35.6 KB Authoring application: PDF Studio
MD5: d89bc1081b6a32e0b6cebc01c3f0b5a8 SHA-1: a69b16fc24539cb83c14b1f11de262d6eb0f06bb SHA-256: e10dea475b1ac2dad534f71a74f4617354709636942c4210275131cf9aeba156
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents, a technique commonly used for SEO poisoning or phishing lures. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded links, such as http://warren.capetown/uploads/1/3/0/5/130590338/5146806.pdf, likely serve as a distribution point for further malicious payloads or to redirect users to phishing sites.

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://warren.capetown/uploads/1/3/0/5/130590338/5146806.pdf
    • http://bienchula.net/uploads/1/3/0/6/130639463/34896.pdf
    • http://aztecwhistles.com/uploads/1/3/0/5/130543453/nesupu-fuvenuzisaredu-wegadekuxizaz.pdf
    • http://livu.kvipa.ru/uploads/2020/01/28/fcd72318.pdf
    • http://ds4you.tech/uploads/1/3/0/4/130488539/movopapozofe-lonuzepinidix-vadut-bakosaril.pdf
    • http://27000grainsdecafe.ca/uploads/1/3/0/6/130620522/voruwodoropexabid.pdf
    • http://misscarladance.org/uploads/1/3/0/5/130551775/a22ba299a38d8c4.pdf
    • http://risewithonyx.com/uploads/1/3/0/5/130588573/mujevoxo_miwozaki_meroriwijak_pajuduge.pdf
    • http://nypdvolleyball.com/uploads/1/3/0/6/130639544/totufovawilu.pdf
    • http://juliejesternewman.com/uploads/1/3/0/3/130323374/130323374.html#centerpoint+4x32+crossbow+scope+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001288.bin
d2287768f0ce2250bc2040839f76a068ca3e95cbc6fe31fe25e83596e227013c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1288 8404 bytes

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