Malicious PDF — malware analysis report

Static analysis result for SHA-256 13c057b2dcc44abd…

MALICIOUS

PDF

33.9 KB Authoring application: Adobe PDF Library 9.0
MD5: 6ad1566290387c81f57d07495104ca6e SHA-1: 3d50639d0fc1f4eec2e6e24dfe63a3c5050ba991 SHA-256: 13c057b2dcc44abd86686fd4a0e9d836dde5641a556cd0c919726f8e698642f4
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or SEO abuse.

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://eastvalleyyouthsports.com/uploads/1/3/0/6/130639019/nagedu.pdf
    • http://ecogourmande.com/uploads/1/3/0/2/130271017/dodararix.pdf
    • http://promarstapleandnail.com/uploads/1/3/0/4/130489475/moxugew-regirusak-vapux.pdf
    • http://djtlmusic.com/uploads/1/3/0/5/130588559/f84bb7.pdf
    • http://qhpta.shop/uploads/1/3/0/5/130589313/pijetaxazexe.pdf
    • http://shopsone3.fun/uploads/2020/01/28/bdb2eb50825fd32.pdf
    • http://mindmadekc.com/uploads/1/3/0/5/130589220/kepuwajezu-jikagerin-duxepuvurowuwud.pdf
    • http://ashesofren.com/uploads/1/3/0/2/130289773/dupakububovol_lofuwiwafakimo_witebipulu.pdf
    • http://nupelicanparty.org/uploads/1/3/0/7/130775762/130775762.html#present+perfect+progressive+tense+worksheet+for+grade+6

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e6.bin
8468555c105213f3a8f9f7b52d4ba0370913bebd0746d3551370076398128097		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E6 7780 bytes

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