Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b97f6b3ef67a3d…

MALICIOUS

PDF

47.4 KB Authoring application: Adobe PDF Library 9.0
MD5: 28e362085728903ab31873b87c213cfc SHA-1: de7f7acc12cdaf0a6e7082988af11d375d079452 SHA-256: 25b97f6b3ef67a3d9f6b4e6e606cb2675f436bbf6c1dc7c26239bf1d260ce974
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The embedded URLs are the primary IOCs, suggesting a phishing or content distribution campaign.

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://thepipcup.com/uploads/1/3/0/6/130603918/baserez_jijixexozenopap.pdf
    • http://mirandacraig.co/uploads/1/3/0/6/130639452/linasajijapopewu.pdf
    • http://oddlyspecificshirts.com/uploads/1/3/0/4/130488153/wisejumafe-libudino-zurezulama.pdf
    • http://kig.villa-almarin.ru/uploads/2020/01/28/253313.pdf
    • http://royalflorals.com/uploads/1/3/0/5/130588173/rezeremu.pdf
    • http://noyirionworks.com/uploads/1/3/0/5/130551323/9be50cffc62.pdf
    • http://aleonor1to1.com/uploads/1/3/0/6/130639676/8116972.pdf
    • https://vodadetisizibam.weebly.com/uploads/1/3/0/4/130488270/xuropekukibux.pdf
    • http://tbarandelahairstudio.com/uploads/1/3/0/6/130621153/b0684e9f8148.pdf
    • http://my-gama.com/uploads/1/3/0/6/130621334/099d6a3256ebab8.pdf
    • http://psychotherapy121.org/uploads/1/3/0/6/130620788/welowuletigero-baves.pdf
    • http://mindforyou.org/uploads/1/3/0/2/130272851/130272851.html#baixar+jogos+peperonity+128x160

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001396.bin
59028e7ff8d05906185acc5d8099a90020aa73cee20eb7ec7c9e90a9d8599de7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1396 10328 bytes
font_01_sfnt_off00007141.bin
67fc5177fd584259d92df2d04361ee5812aeaf6169251fafb29fd1ddf16900d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 16500 bytes

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