Malicious PDF — malware analysis report

Static analysis result for SHA-256 52617cc5c9acc118…

MALICIOUS

PDF

64.6 KB Authoring application: Soda PDF
MD5: 23f758331af2df24d9543191984d18d8 SHA-1: 0663c29df80bff9f43d9d427f5f12fd5239ba611 SHA-256: 52617cc5c9acc118467c2c8f9d4bf80821bf19b7ffa6b3898d1d4ff0f31c8ee8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique commonly used for link farms or to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, suggesting a redirection or phishing attack.

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://npsvs.com/uploads/1/3/0/4/130483678/winaxopavibosu.pdf
    • http://tolandvideo.com/uploads/1/3/0/6/130621439/d576d4081b39.pdf
    • http://nannymoscow.ru/uploads/1/3/0/5/130538836/66144859997d9d.pdf
    • http://krowncustomcues.com/uploads/1/3/0/2/130291779/1242a6097b4fec.pdf
    • http://ladadetail.su/uploads/2020/01/28/725998.pdf
    • http://giw.muzserwis.ru/uploads/2020/01/28/472772.pdf
    • http://theplugalex.com/uploads/1/3/0/6/130621721/kulobudo-zopibud-tikumojukafaro.pdf
    • http://newtonleysmk.weebly.com/uploads/1/3/0/2/130272851/zuberofijiki_lenag_zinorusonemo_tekufide.pdf
    • http://statelab.weebly.com/uploads/1/3/0/5/130550915/e460c073fa85b7b.pdf
    • http://deafperutour.com/uploads/1/3/0/6/130604433/sefibezegixekelube.pdf
    • http://paulagrosario.com/uploads/1/3/0/4/130435905/rejoridobudow-gofuxotidala-rokowabu.pdf
    • http://tawo.pp-offer.icu/uploads/2020/01/27/79a2e162802d3.pdf
    • http://nupelicanparty.org/uploads/1/3/0/6/130605153/130605153.html#intracellular+parasites+pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013e6.bin
20e0b2cf0aac50985af4bf42b0ec8f48ce1969b720375cc32c75ff8b545f49db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E6 8380 bytes
font_01_sfnt_off0000ad1b.bin
0d6b538463db6138d4aa1a9071f216fc7d135564968fc2132e3252592a2c875f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD1B 3032 bytes
font_02_sfnt_off0000b721.bin
2d76b84417896ac3706ff0bd9e10d3f11cbedd4c98f8fe6789e5c16994be1053		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB721 16064 bytes

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