Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf25e87133decb5d…

MALICIOUS

PDF

50.3 KB Authoring application: Soda PDF
MD5: 1639186442f96b3d76b22893febcd093 SHA-1: aab8f01e1df4d32d0adf3ee4c53a71e490fa9528 SHA-256: bf25e87133decb5daaf18fc5a4206d07c800e016413ce48f35e6b179ecac59cb
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 external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also flag this file as malicious, specifically as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are likely used to redirect users to malicious content or phishing pages, contributing to the overall malicious nature of the document.

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://oakbrookoptometry.com/uploads/1/3/0/5/130588947/19af45985f8b734.pdf
    • http://lessons-by-alex.com/uploads/1/3/0/6/130605048/5385414.pdf
    • http://martymackenzie.com/uploads/1/3/0/6/130621301/7652030.pdf
    • http://den.oginsky.me/uploads/2020/01/29/kosinakubug.pdf
    • http://zozixiwom.janderu.xyz/uploads/2020/01/27/vujotiwegade-sudubag-lowokeze-zuvej.pdf
    • http://genumelab.ecpn.su/uploads/2020/01/27/40e1412.pdf
    • http://gojirasuju.yanglegal.pro/uploads/2020/01/28/8017181.pdf
    • http://incubator143.org/uploads/1/3/0/5/130588299/wuwufevibasim-salarozin-pexutetovele.pdf
    • http://porelutub.skazkashow.ru/uploads/2020/01/27/ab1878b20af9.pdf
    • http://juzis.ip-i.ru/uploads/2020/01/29/b58f907aa5604d.pdf
    • http://nidamesuw.manipulyator116.ru/uploads/2020/01/28/saguxagimodewox_tekev_borunuduzorav_vimozaxeka.pdf
    • https://zupudirepizogob.weebly.com/uploads/1/3/0/4/130488446/luxugaruzejiliza.pdf
    • http://zizix.slaveda.com/uploads/2020/01/27/6695818.pdf
    • http://linlinyang.com/uploads/1/3/0/5/130550948/47eadbbf7ee8394.pdf
    • http://lenesim.smpix.ru/uploads/2020/01/28/47025d.pdf
    • http://paradigmfitness.net/uploads/1/3/0/3/130379202/ea4c087d6063.pdf
    • http://mitchheaslipfitness.com/uploads/1/3/0/3/130312913/af101a1f23.pdf
    • http://claybon.shop/uploads/1/3/0/5/130539935/7301474.pdf
    • http://sakninhna.com/uploads/2020/01/27/4293699.pdf
    • http://northwestuu.com/uploads/1/3/0/5/130538996/130538996.html#argonautiche+valerio+flacco+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015ac.bin
926bcae8ff5e24508c3ea747067f0bc51c4b5828679f79060a74cdc88efe5133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15AC 8556 bytes
font_01_sfnt_off00007d76.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D76 16204 bytes

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