Malicious PDF — malware analysis report

Static analysis result for SHA-256 88dd1eb94b1cb5b2…

MALICIOUS

PDF

35.3 KB Authoring application: SWFTools
MD5: cb1936e6f7fee13c9c444ba3761fbc1b SHA-1: de59b4164f217eaef71d1ad900fb82232110496c SHA-256: 88dd1eb94b1cb5b2f512c4922a580e5d3a6a009c3d4f757ec4eb7cd23976cd93
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall. The embedded URLs suggest a phishing or SEO spam campaign, where the PDF acts as a lure to redirect users to 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://mta-sts.mx.dragansutic.com/uploads/1/3/0/3/130323210/norerebunarejijide.pdf
    • http://southerncrossland.com/uploads/1/3/0/6/130620573/vupubuve.pdf
    • http://mstsrv11.mst.systech.ch/uploads/1/3/0/5/130543310/vexam.pdf
    • http://jaxrenovationservicesllc.com/uploads/1/3/0/2/130289247/7960802.pdf
    • http://gerrardphotography.com/uploads/1/3/0/4/130435516/tiviluvabawaleko.pdf
    • http://www.porterterrylaw.com/uploads/1/3/0/6/130620509/4670188.pdf
    • http://katyandlincoln.com/uploads/1/3/0/7/130776254/dudisejixakogib.pdf
    • http://michaudwellness.com/uploads/1/3/0/6/130622077/movowapafurenaluk.pdf
    • http://newpathorg.com/uploads/1/3/0/4/130488969/daligiwekepotu.pdf
    • http://mymoneybuilder.net/uploads/1/3/0/8/130814673/156273.pdf
    • http://www.codsn.com/uploads/1/3/0/5/130542773/f7d12.pdf
    • http://masonrystonework.com/uploads/1/3/0/6/130640116/koguzaruwep_daxapavepes.pdf
    • http://bluemountainsanimalrehabcentre.com/uploads/1/3/0/6/130604688/305828.pdf
    • http://www.noccassoc.org/uploads/1/3/0/6/130639855/a3b7efe52.pdf
    • http://aplc-nj.org/uploads/1/3/0/8/130874238/8311145.pdf
    • http://lists.accordionapocalypse.com/uploads/1/3/0/7/130775229/130775229.html#java+projects+with+source+code+using+netbeans

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea0.bin
e6f7ba42c065410af6beee59eeb3cb33861db4f3586453216f7288268f8782d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA0 8124 bytes

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