Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dcab4bfa03e7b56…

MALICIOUS

PDF

40.8 KB Authoring application: Smallpdf Desktop
MD5: b008eb99a4456067037fe4f1df8e375f SHA-1: 0fea06f0eb20c375d61501bb4b118bdf7759b78f SHA-256: 4dcab4bfa03e7b56bc28d880b7048ebcbed6fc525fbcbecfdd84f92198a462a1
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical finding for a large external link farm and ClamAV detection as phishing malware. The embedded URLs and the document body text, which includes a URL, indicate a likely phishing or SEO spam campaign. The primary goal appears to be redirecting users to potentially malicious content hosted on numerous domains.

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://mywobblyireland.com/uploads/1/3/0/5/130588237/lififakeruw.pdf
    • http://sarahrileypottery.com/uploads/1/3/0/6/130605040/840386.pdf
    • http://deathbyiptv.ca/uploads/1/3/0/5/130588937/6712267.pdf
    • http://mmafanvote.com/uploads/1/3/0/5/130540128/jejoxawamaguke.pdf
    • http://misslncreations.com/uploads/1/3/0/3/130323817/bosoz_degapuzebu_ganazux_jotasorifupevi.pdf
    • http://realitywhisperer.com/uploads/1/3/0/4/130436307/0d76b1bbf3.pdf
    • http://adu4us.com/uploads/1/3/0/7/130739669/dosagazinole.pdf
    • http://nblbball.com/uploads/1/3/0/5/130588802/bapezatup_xajalonojopet.pdf
    • http://oregonprenup.com/uploads/1/3/0/5/130545097/352584435657.pdf
    • http://anewyoubeauty.co.nz/uploads/1/3/0/6/130621046/ca1a189846.pdf
    • http://incrediblemeatdeals.com/uploads/1/3/0/7/130738739/3271413.pdf
    • http://gomriz.com/uploads/1/3/0/3/130323592/130323592.html#cakewalk+sonar+platinum++free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129c.bin
c859123e0ae047ab0eb7f9f13d8fe70a4607ba8c81f931e768a9b9a5d18320e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129C 7860 bytes

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