Malicious PDF — malware analysis report

Static analysis result for SHA-256 8149e28d211cbb56…

MALICIOUS

PDF

64.0 KB Authoring application: ImageMagick
MD5: 3697afaafde51877f1fa67959671bfc3 SHA-1: 5bc11ffeddc49f66f2b064a997825cb5d4fd16e6 SHA-256: 8149e28d211cbb569df22b5688b267541faefd87a96b92a575ac6278cf0fb2c9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of an SEO spam or phishing campaign, aiming to drive traffic to malicious content. The ClamAV detection and ML classifier further support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://streetbrunch.com/uploads/1/3/0/7/130775013/pudaz.pdf
    • http://pax-roo.com/uploads/1/3/0/6/130639438/lelemikuw.pdf
    • http://mail.strangerstoclients.com/uploads/1/3/0/8/130874669/396698.pdf
    • http://www.tapsalteeriee.com/uploads/1/3/0/2/130274151/bagesijelirapipuri.pdf
    • http://makesafefilmtv.com.au/uploads/1/3/0/5/130541285/778267.pdf
    • http://www.pantheonadc.com/uploads/1/3/0/4/130483351/sukokef.pdf
    • http://momentumdavis.com/uploads/1/3/0/4/130483447/4116446.pdf
    • http://mta-sts.mail.preisendorfer.net/uploads/1/3/0/6/130604034/jidogorinab.pdf
    • http://federalkeywords.com/uploads/1/3/0/6/130604716/sumele.pdf
    • http://dykewhistle.com/uploads/1/3/0/7/130775106/bujiwofepanavij_jekofaroriziwis.pdf
    • http://deluxebody.org/uploads/1/3/0/6/130639493/2452574.pdf
    • http://antebellum56.pleasingfood.com/uploads/1/3/0/6/130621873/130621873.html#gta+san+andreas+minigun+los+santos

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012a7.bin
6b1f19baae838b7fc2555c3900a0d6b7fafec644577c2df78c73000b90d5940e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7 8164 bytes

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