Malicious PDF — malware analysis report

Static analysis result for SHA-256 693583ac2980b46e…

MALICIOUS

PDF

116.0 KB Authoring application: Pdftk
MD5: 9965279e6ed8907b38c8251d79b99664 SHA-1: 7586845096a7c0f00785b56fe2f34dfaabd58c96 SHA-256: 693583ac2980b46e7fb9f97cf938145059fef60fdc2f89d7e94cdccc706c467a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to manipulate search engine results or distribute malicious content. The document body also contains invoice-related language, indicating a potential lure. The presence of embedded URLs and the ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 4

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://bradleysteelbuilding.com/uploads/1/3/0/3/130324416/7d065634f1a9b.pdf
    • http://comedianambrosejones.net/uploads/1/3/0/5/130539691/kukadimoxupimov.pdf
    • http://livinglotusyoga.net/uploads/1/3/0/5/130588505/85596aa79ef.pdf
    • https://punivegapiwixos.weebly.com/uploads/1/3/0/3/130323181/kesibumuwilalo.pdf
    • http://noeticanalysis.com/uploads/1/3/0/3/130323750/laregametotivojesase.pdf
    • https://bazamutarubo.weebly.com/uploads/1/3/0/4/130436181/kerageg.pdf
    • http://norzavod.weebly.com/uploads/1/3/0/4/130435743/6e45fe8431f6ef.pdf
    • http://5dsottozero.com/uploads/1/3/0/5/130590622/julinorugutip.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/7/130740180/130740180.html#financial+accounting+reporting+analysis+and+decision+making+6th+edition+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b7.bin
1da335dd334bbb02ac66fe626e8f8a5974ceb9e7192f3244f11ab5dc6d595c83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B7 9640 bytes
font_01_sfnt_off00019076.bin
bb66d78edca8aa75a8db461931e44ad6eab12e4cd439df836d92d13c6ef6c22d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19076 2668 bytes

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