Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74de8292a5526c8…

MALICIOUS

PDF

29.1 KB Authoring application: OpenOffice Draw
MD5: fa866adae92048bb2b23bbd70581469e SHA-1: 812e7584d3cbb27d71224f4f7225ea85b7a05503 SHA-256: f74de8292a5526c88e5ca51a952f9c2088c061623fd807fc52fda3267bd93e8c
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score support this assessment. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://smartmobilityinc.com/uploads/1/3/0/6/130621938/2555999.pdf
    • http://wiltgenconstruction.com/uploads/1/3/0/4/130435826/25c0822.pdf
    • http://bevinbranlandingham.com/uploads/1/3/0/7/130776276/339189.pdf
    • http://hostmaster.suttas.com/uploads/1/3/0/6/130620819/xatulurumuribu_jiradodofefis_jekunevekujuka_nobabugafilen.pdf
    • http://wnybusinessbroker.com/uploads/1/3/0/6/130639845/pasalite.pdf
    • http://northhobby.us/uploads/1/3/0/6/130604834/3477956.pdf
    • http://refreshingoasis.org/uploads/1/3/0/3/130379821/9833412.pdf
    • http://memphismemo.com/uploads/1/3/0/6/130604824/9527468.pdf
    • http://smartcityconference2018.com/uploads/1/3/0/4/130476244/584ecfab6b.pdf
    • http://doggotrends.com/uploads/1/3/0/4/130488851/wulumav-popuxis-rufuxipifidika-sedoma.pdf
    • http://collinforcouncil.com/uploads/1/3/0/6/130605476/vuxix-warivufi.pdf
    • http://www.theyogaden.net/uploads/1/3/0/4/130492963/a10f3343cc.pdf
    • http://mattwolbertphotography.com/uploads/1/3/0/2/130289279/5418148.pdf
    • http://artbyjulieh.com/uploads/1/3/0/6/130605302/3acb3d7910b1ed5.pdf
    • http://iohannespontes.com/uploads/1/3/0/6/130639901/nufem.pdf
    • http://wileypcesymposium.com/uploads/1/3/0/6/130621248/nepuzuku.pdf
    • http://nugriot.com/uploads/1/3/0/7/130739632/pudoniru_jafer.pdf
    • http://wrapbros.us/uploads/1/3/0/4/130435716/2075668.pdf
    • http://bambringo.com/uploads/1/3/0/4/130483457/rurukudozu.pdf
    • http://taiyangchengzongdaili.br3h.com/uploads/1/3/0/4/130476427/130476427.html#school+calendar+2018+19+pdf+kalvisolai
    • https://drive.google.com/open?id=

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001723.bin
c9a83c4e9a1d7421d74ec7ec58b386dc10e1b79c4a4868aa5bfb327fe0c4586d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1723 6300 bytes

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