Malicious PDF — malware analysis report

Static analysis result for SHA-256 38b373f03ddeb943…

MALICIOUS

PDF

34.4 KB Authoring application: LibreOffice
MD5: fa96476e5b9738020865d766d863c5ce SHA-1: a620b79ff7ce3b3cde658c7193a6b39d833d0fce SHA-256: 38b373f03ddeb9439adec0ec6f3bcd54f62a0967efc28188eb4ca15870b6d31c
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body contained mostly garbled text with some URLs.

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://tattletalesboutique.com/uploads/1/3/0/4/130489275/rafuwasepitosenok.pdf
    • http://daughtersofthenewrevolution.org/uploads/1/3/0/6/130621593/132e02eb.pdf
    • http://houseofbon.design/uploads/1/3/0/5/130540178/xoxusodipet-zozipofuwiw-mabivovejeruvel.pdf
    • http://insomniart.com/uploads/1/3/0/5/130551417/fotixijerep.pdf
    • http://wikipf.com/uploads/1/3/0/5/130588603/8183173.pdf
    • http://mooredems.com/uploads/1/3/0/6/130621622/vikufunaguma.pdf
    • http://trios3dlab.com/uploads/1/3/0/7/130776594/jafujafipuz_rekamamakezogon_jokuj.pdf
    • http://greecejapan.net/uploads/1/3/0/5/130539097/woxiz-vituzuxufexiw.pdf
    • http://yachtrock.biz/uploads/1/3/0/5/130551066/660027.pdf
    • http://ourladywillowbrook.com/uploads/1/3/0/6/130604192/5440197.pdf
    • http://mzansinewsonline.com/uploads/1/3/0/2/130289399/bce3d916bb.pdf
    • http://www.acmino.com/uploads/1/3/0/6/130621634/6313963.pdf
    • http://drpenagarcia.com/uploads/1/3/0/6/130604045/jiwuwivita.pdf
    • http://momentcapture.net/uploads/1/3/0/6/130620863/retidefefuno_vetovumujogetus.pdf
    • http://myjourneyracing.com/uploads/1/3/0/3/130323322/4504561.pdf
    • http://stanfordtestprep.com/uploads/1/3/0/2/130287852/morivolem_kamevuzenolaxa_dufakogudenarak_sopejajixe.pdf
    • http://nkq5a.slpny.com/uploads/1/3/0/5/130550797/130550797.html#november+rain+guitar+solo+lesson

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001359.bin
7f1f73ffa3d45096b99011c0d0653a8d3495f77a3b1dc9bb63fe59ce76167ddb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1359 8440 bytes

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