Malicious PDF — malware analysis report

Static analysis result for SHA-256 f18d1efba909353f…

MALICIOUS

PDF

38.9 KB Authoring application: PDFBox
MD5: 1dc9a717421d27b39638bb168805a37a SHA-1: bade605af9842fe4ea0ed542a90f45dccdb41356 SHA-256: f18d1efba909353f0ad1b0f3e26c15c696564be755459e8b0bdbed8a892e96fb
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body itself appears to be malformed or contains obfuscated text, preventing a clear understanding of its specific lure.

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://blackhillsbiking.com/uploads/1/3/0/7/130775624/ae51df263a99579.pdf
    • http://drkerriesmedley.com/uploads/1/3/0/6/130639777/vutelunexilenawes.pdf
    • http://payforperformancewebcasts.com/uploads/1/3/0/2/130291785/1680713.pdf
    • http://wisemoment.net/uploads/1/3/0/7/130775393/5408914.pdf
    • http://mrdryit.com/uploads/1/3/0/2/130289754/63b6b45f4896b.pdf
    • http://arcanumbridgeconsulting.com/uploads/1/3/0/8/130813694/05c4e46004.pdf
    • http://shelfstalker.net/uploads/1/3/0/6/130604126/c00aabaae28b.pdf
    • http://regencymorgans.net/uploads/1/3/0/7/130776688/9163791.pdf
    • http://nordicswimming.org/uploads/1/3/0/2/130270901/jiganugogibalavewur.pdf
    • http://www.globalfamilyenterpriseadvisors.com/uploads/1/3/0/3/130323957/venedawovo-tuwowusu-lotelukokiwodu-jukujurafenexu.pdf
    • http://feistymunchkin.com/uploads/1/3/0/2/130274076/3019544.pdf
    • http://thelowvisionstore.org/uploads/1/3/0/7/130776750/131b4254070.pdf
    • http://shanghaiveggies.com/uploads/1/3/0/7/130740177/8865262.pdf
    • http://bangkokg.com/uploads/1/3/0/8/130874382/9069558.pdf
    • http://sipff.com/uploads/1/3/0/4/130435732/316547.pdf
    • http://derrameister.com/uploads/1/3/0/9/130969824/xonepa.pdf
    • http://www.thomasturkle.com/uploads/1/3/0/8/130813059/xajajej_kunakefofiraz_tidanike_muluko.pdf
    • http://missfoggscience.com/uploads/1/3/0/5/130539899/buwijufawipebe.pdf
    • http://uniquevermonthome.com/uploads/1/3/0/4/130488994/4e35e22cfb7d.pdf
    • http://513freemusic.com/uploads/1/3/0/2/130273790/9333863.pdf
    • http://newearth.design/uploads/1/3/0/6/130605406/9610459.pdf
    • http://madcarn.com/uploads/1/3/0/3/130312971/xaguzupudum.pdf
    • http://wcd-4k4esn.mgh-r.ch/uploads/1/3/0/7/130775791/130775791.html#remedio+caseiro+para+prevenir+cancer+de+prostata
    • http://shelfstalke

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003504.bin
cb1039a77cd4e759e25a01111872bd1db2474ba86e8867b8231fdb3511b67164		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3504 10012 bytes

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