Malicious PDF — malware analysis report

Static analysis result for SHA-256 30371390fa170c24…

MALICIOUS

PDF

70.2 KB Authoring application: OpenOffice.org
MD5: f302ba62f41a78d802c18353272e4b5d SHA-1: c4bc6db7a11e3627d56d8fdb972c5a54c0feac1a SHA-256: 30371390fa170c240a2246b550e5e324eb48d23371d960bb9efc32235a581c41
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links to other PDF documents. This technique is often used for SEO manipulation or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious classification. No scripts were extracted, and the document body content is heavily corrupted, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://angelospantego.com/uploads/1/3/0/8/130874369/jowuvusokixu_rugekepamexi.pdf
    • http://ascakes.catering/uploads/1/3/0/6/130604877/fejikufanaviputada.pdf
    • http://composerfirst.com/uploads/1/3/0/2/130289158/7a818b3e8e30.pdf
    • http://hostmaster.paullucaswriter.com/uploads/1/3/0/6/130639950/damoxetok.pdf
    • http://www.wmaustralia.com/uploads/1/3/0/6/130603937/6071297.pdf
    • http://ctrader.it/uploads/1/3/0/6/130621765/misaruzevusaxol-pugav.pdf
    • http://www.everydogisaworkofart.com/uploads/1/3/0/7/130775510/4017499.pdf
    • http://cincottalaw.com/uploads/1/3/0/8/130874316/cd7efe4.pdf
    • http://cyclingrespect.com/uploads/1/3/0/7/130739437/116051.pdf
    • http://axlecreek.net/uploads/1/3/0/5/130589144/a78b526.pdf
    • http://hostmaster.jeroenvandijken.nl/uploads/1/3/0/3/130379182/buwidotem-kizefatifutat-xanatopigipamip-wavasuze.pdf
    • http://p9jzm.slpny.com/uploads/1/3/0/8/130874409/130874409.html#cite+maker+apa+format

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e9d.bin
8098cb39dab6d5f348847894713c5f750fcdbc436189a19de3bcfceb507015c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9D 8796 bytes

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