Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1f9ebdb2cdb5dbb…

MALICIOUS

PDF

36.0 KB Authoring application: SWFTools
MD5: ba7598764ec6cc09725d62b77e111580 SHA-1: 2ad7808fd2fcbd954123f8d91fc15aefb6736c96 SHA-256: a1f9ebdb2cdb5dbb63a7edb443396513131df09b6f3aef3e7b2b844e0267576f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as phishing or traffic redirection. The document body is heavily obfuscated and does not provide clear user-facing content, but the overall structure points to a link farm designed to manipulate search engine results or distribute malicious payloads via the linked PDFs.

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://sitesavings.shop/uploads/1/3/0/4/130493143/188670.pdf
    • http://corvuspress.net/uploads/1/3/0/2/130289252/loxepuleb_xodiz_gufufokadogug_tajaxipiwin.pdf
    • http://sweetpeamaternity.ca/uploads/1/3/0/6/130620343/7702290.pdf
    • http://bubblebag-australia.net/uploads/1/3/0/4/130436188/mapizowubasofulevavo.pdf
    • http://ldsstorytime.com/uploads/1/3/0/2/130270747/9019604.pdf
    • http://narcabuserecoverysupport.com/uploads/1/3/0/2/130271094/9cd1d7.pdf
    • http://www.vpn.erwinandsons.com/uploads/1/3/0/2/130271179/xarosuzas-rojolitadiwe.pdf
    • http://realizationofdreams.com/uploads/1/3/0/6/130604934/5118225.pdf
    • http://www.prazfitlife.com/uploads/1/3/0/4/130435694/gatebesusarum.pdf
    • http://ngbeautymakeupstore.com/uploads/1/3/0/6/130604152/14145491db3625f.pdf
    • http://gbinthemorning.com/uploads/1/3/0/4/130436222/1601786.pdf
    • http://cafedonruiz.com/uploads/1/3/0/2/130289265/gokozolu-dakebufol-zaxunexowizaru.pdf
    • http://www.thesterlinggem.com/uploads/1/3/0/6/130639776/a34c1494c6b5f.pdf
    • http://mojonz.co.nz/uploads/1/3/0/5/130590191/f679d2.pdf
    • http://castlehallnews.com/uploads/1/3/0/7/130776035/vimezutigobamijopa.pdf
    • http://keybiscaynetennis.com/uploads/1/3/0/8/130874376/05957c.pdf
    • http://toddtea.com/uploads/1/3/0/6/130639653/03d1632c9d6.pdf
    • http://ronawatts.com/uploads/1/3/0/5/130590217/muselisaxof_gedexi_girawus.pdf
    • http://spanish.blueoceantechnology.no/uploads/1/3/0/4/130476506/2a49b47b47769.pdf
    • http://sallykfrey.com/uploads/1/3/0/4/130488308/zogujibapilosam.pdf
    • http://supplementbottles.com/uploads/1/3/0/6/130603888/wokulure-tanijegoxojom-rekurugewet.pdf
    • http://synergietechnology.com/uploads/1/3/0/2/130287394/130287394.html#past+modals+of+deduction+exercises+b2
    • http://www.vpn.erwinandsons.com/uploads/1/3/0/2/130271179/xa

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002de6.bin
4464f07070df3bb78af18ea5fdda968392d2f991fcb429bbb8b9b801080adb44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE6 7192 bytes

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