Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f711c7c784dd7df…

MALICIOUS

PDF

44.3 KB Authoring application: Serif PagePlus
MD5: 2cad8c1efc55920a173ae9dc27a7586d SHA-1: b1a8956d068be0dae1ada2cfe4582de06d42409a SHA-256: 0f711c7c784dd7df314cc4b1d26faf2467c9b14a92f81354cac51b1c044e1933
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution through these linked PDFs.

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 https://fapufopeloda.weebly.com/uploads/1/3/0/2/130289675/nojozowijafof_jomarazigugelu_ranojol_walibuwedanu.pdf
    • https://famoderowasaka.weebly.com/uploads/1/3/0/5/130538985/xatoder_tedibufip.pdf
    • http://tryoungcrew144.com/uploads/1/3/0/6/130621721/vonewokefo-xolirapori.pdf
    • http://ziro.web-delo.icu/uploads/2020/01/29/8f3ebf91dee7520.pdf
    • http://evaairways.org/uploads/1/3/0/6/130621019/zonav.pdf
    • http://almudaifalawfirm.com/uploads/1/3/0/6/130620759/xagamopa.pdf
    • http://xibawakur.frirus.ru/uploads/2020/01/27/vokobiwifik.pdf
    • http://djsacademy.com/uploads/1/3/0/5/130590241/130590241.html#pe+explorer+free
    • http://linux.thai.net/projects/fonts-tlwg
    • http://www.thaitux.info

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011c1.bin
5760bec09a0019bb805d4d427ebb3aa6f9e93463e3d9b4e7949d7566b36e8e6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C1 9004 bytes
font_01_sfnt_off00005b19.bin
13d11f6bf8826d41aa10b3345ce1f80eef05e2346ce555661dbdda4d54d06d94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B19 14568 bytes

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