Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8f350d0af8a45e…

MALICIOUS

PDF

47.6 KB Authoring application: pstoedit
MD5: 0cc1f4a5fe3d910dba5337b26563afd5 SHA-1: 312c5c3f7525ea90d4666240feb185a1179df70a SHA-256: 6e8f350d0af8a45ea0068a71a659517a835ce33e4f1eddde58988acb7cb6ec23
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV specifically identifying it as 'Pdf.Phishing.TtraffRobotInstall'. The embedded URLs likely serve as a lure to redirect users to malicious or phishing content, potentially for SEO manipulation or to distribute further malware.

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://nsedacademy-payments.org/uploads/1/3/0/5/130589085/9692807.pdf
    • http://choptallybarber.shop/uploads/1/3/0/7/130775288/9674933.pdf
    • http://nwm9.club/uploads/1/3/0/7/130775850/zojanavanebel_repaduwizow_jeregi.pdf
    • http://myamigo.net/uploads/1/3/0/3/130323163/7183818.pdf
    • http://prismwellnesspractices.com/uploads/1/3/0/7/130739210/a50d2a.pdf
    • http://thelookoutapartments.com/uploads/1/3/0/4/130435875/dd2f827c53b858.pdf
    • http://rocknreelcc.com/uploads/1/3/0/4/130488286/biposoxot-gajujopafazewig.pdf
    • http://plyosoul.net/uploads/1/3/0/3/130313561/e285600e2.pdf
    • http://trtidalwave.com/uploads/1/3/0/4/130483990/9857339.pdf
    • http://staceymbrown.com/uploads/1/3/0/4/130483350/5767913.pdf
    • http://eliteeuromotors.com/uploads/1/3/0/5/130588500/givewoponovatate.pdf
    • http://theowlpublishing.com/uploads/1/3/0/5/130588296/silisa-duzuj.pdf
    • http://akcustomart.com/uploads/1/3/0/6/130639396/somasubobi_tujukuke.pdf
    • http://highlandpark-homes.com/uploads/1/3/0/5/130590481/1527656.pdf
    • http://davidmarquesibanez.com/uploads/1/3/0/5/130588803/130588803.html#ielts+task+2+discuss+both+views+sample
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003f11.bin
d44af1cca975c90208601689a92062d3a77b3acb5f688481bd8ebcfe1bf97255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F11 20760 bytes
font_01_sfnt_off00005e08.bin
7d731e54a8de2d9d1e91c8156b5a668091f14dd610cd235d52b3e8ba33381d56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E08 10552 bytes

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