Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb08325a556dfda1…

MALICIOUS

PDF

41.7 KB Authoring application: QPDF
MD5: 29a9151450dc171d09b0301dd5303f6a SHA-1: abf53569018a967aa626c19c967f03cc9b5a6002 SHA-256: cb08325a556dfda1906c290139f4ad044d8a7c3f662b25d76ce248f48c6e92e3
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or phishing. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, suggesting the document's purpose is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://montanagiftstop.com/uploads/1/3/0/6/130603937/c8a1e1fb.pdf
    • http://calhounheritagep.com/uploads/1/3/0/6/130639110/e78ec610fbd4.pdf
    • http://10dayfilm.org/uploads/1/3/0/3/130323656/wujolowi_begipowe_todevobokap.pdf
    • http://xopilalo.dddich.ru/uploads/2020/01/29/xigez.pdf
    • http://soundsolutionsmarketing.net/uploads/1/3/0/6/130604542/ee5427b9301.pdf
    • http://alejandrodrago.com/uploads/1/3/0/3/130379424/475d5.pdf
    • http://marketingprivateschools.com/uploads/1/3/0/6/130620946/032d4.pdf
    • http://mister5foot18.com/uploads/1/3/0/5/130548070/fb6661fbff94951.pdf
    • http://artexart.uk/uploads/1/3/0/6/130639689/nuzoba.pdf
    • https://tekozefamediv.weebly.com/uploads/1/3/0/2/130287914/4411428.pdf
    • http://connectingmoments.co.nz/uploads/1/3/0/6/130603688/nimiva-dasojufamod-xapitugejasid.pdf
    • http://2020blue.org/uploads/1/3/0/3/130379227/130379227.html#predefined+answers+meaning

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001349.bin
2d0caf766e4aa7301c3fd919cfdda814b7f905477d7d3af004caeb086cbfc7e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1349 9860 bytes
font_01_sfnt_off00005c52.bin
37e0908f1ef255ef445be297141f8cc0e11967ffe8749ed7e33524e366a98df7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C52 16112 bytes

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