Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b41d5bfa2dc98a…

MALICIOUS

PDF

32.0 KB Authoring application: Soda PDF
MD5: c81e56dfb6429716836530df8b58245d SHA-1: bfff3fed9996aeb2aefe621208292aa1a4570ecd SHA-256: 68b41d5bfa2dc98a01a1632bb20184d669d93e4c7514dca73d413fb655a0a9f3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or a phishing campaign designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection further support the malicious nature of this file.

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://mail.shuoacademy.com/uploads/1/3/0/6/130604977/gisovajax_wanedikabejepix.pdf
    • http://sirenstreasuretrove.com/uploads/1/3/0/9/130969527/kukasapumivemeb.pdf
    • http://mail.mnagservices.com/uploads/1/3/0/2/130288359/1137555.pdf
    • http://bellevueboysswive.com/uploads/1/3/0/5/130589409/goboxew_lejuzoxipu.pdf
    • http://lewisfamilyfund.org/uploads/1/3/0/7/130775645/671300.pdf
    • http://www.mohamed-albarasi-academy.com/uploads/1/3/0/7/130775778/cd23332ba6.pdf
    • http://artofrecreation.com/uploads/1/3/0/2/130273766/1cdaa9a022.pdf
    • http://circoestodo.org/uploads/1/3/0/3/130313021/tafeba.pdf
    • http://thelittlethingsboutique.com/uploads/1/3/0/5/130540049/xirazemebu.pdf
    • http://volumesalon.me/uploads/1/3/0/6/130621687/diwoxab.pdf
    • http://gosendme.us/uploads/1/3/0/5/130590613/subukufutufuk_dexig.pdf
    • http://everyoneraps.com/uploads/1/3/0/6/130621831/130621831.html#cards+against+humanity+card+ideas+reddit

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000024da.bin
ce08bc99c84b526047a302563c8dd0641d4980c635094367bebf50b3cd315f62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DA 8160 bytes

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