Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a5b15ae9683904c…

MALICIOUS

PDF

77.4 KB Authoring application: Adobe PDF Library 9.0
MD5: 7b1a8a84be2d1ed25cffb7a414d0e58e SHA-1: f7aaf53931fa4c89f40b00bf1589bf5bb566bcc0 SHA-256: 5a5b15ae9683904cbac19b9524f1be544f4059dfaaad908ff3efc6562549de10
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to other PDF files, indicative of a link farm used for SEO manipulation or to distribute further malicious content. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into believing they are receiving a prize or parcel, a common advance-fee scam. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://myleftlane.com/uploads/1/3/0/6/130620667/4193936.pdf
    • http://greshambankruptcyattorney.com/uploads/1/3/0/6/130620327/xulelo_fisoso_nufeveju_runefobugapeluk.pdf
    • http://724detailing.com/uploads/1/3/0/8/130813372/kubena.pdf
    • http://musette-ventures.com/uploads/1/3/0/5/130589227/9ebe03.pdf
    • http://chinatmz.com/uploads/1/3/0/4/130476203/setegotewige-jigibetife-kekebekubobiwor.pdf
    • http://oneofakindbeauty.com/uploads/1/3/0/7/130739974/jofow-mopopidomak-doxafu-meveniv.pdf
    • http://bellespetservices.com/uploads/1/3/0/7/130738951/divawimugapegiker.pdf
    • http://petermcdonnellwriter.com/uploads/1/3/0/5/130551898/7759798.pdf
    • http://buecard.com/uploads/1/3/0/4/130476652/fuzazev.pdf
    • http://jeepnola.com/uploads/1/3/0/3/130379548/kilunasemeroxoruwij.pdf
    • http://milwaukeetoireland.com/uploads/1/3/0/6/130639239/704fe.pdf
    • http://mail.swvfr.org/uploads/1/3/0/7/130775506/8283161.pdf
    • http://74-123-76-74.mgwnet.com/uploads/1/3/0/8/130873975/130873975.html#kobo+aura+one+size
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002590.bin
aab31e3ad679a5b3b2b3926a394e3616c3a9525091f20f1e299340f611f868e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2590 9812 bytes
font_01_sfnt_off0000e1b1.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B1 2616 bytes
font_02_sfnt_off0000ea5a.bin
2d48feec1a92a310f0ce643f40aa73d0e24b61c8bc17812f20cce5b20f5e8f66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5A 16136 bytes

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