Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb9b852e82ed064…

MALICIOUS

PDF

33.8 KB Authoring application: Pdftk
MD5: e2480e9f738425e221bfc1939f2b625e SHA-1: b4f606f9b801b4f8837461b9dc252b48192cb2c9 SHA-256: 9cb9b852e82ed0647b16aeed8ed36df03585edaac7949d08fd4507799e5ebe83
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This technique is commonly used for SEO poisoning or phishing campaigns to drive traffic to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent.

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://rudgeramos.net/uploads/1/3/0/7/130776089/tukenibumexiwunopi.pdf
    • http://hostmaster.combereadingroom.co.uk/uploads/1/3/0/6/130621531/dukutegibumedekafud.pdf
    • http://cbdcreamonline.com/uploads/1/3/0/7/130775510/bemodavugosin_ziluvumimuraza_jajozetusi_gereku.pdf
    • http://slmgrp.com/uploads/1/3/0/7/130738876/4908757.pdf
    • http://whitneyswings.com/uploads/1/3/0/5/130543598/kelavuborefak.pdf
    • http://kootenaytribe.com/uploads/1/3/0/6/130620961/26fd9b258fb40.pdf
    • http://bicyclexplorers.com/uploads/1/3/0/6/130605341/d342ddf8363.pdf
    • http://tappchicago.com/uploads/1/3/0/4/130489434/lumireb.pdf
    • http://nilserickson.us/uploads/1/3/0/6/130620244/4736601.pdf
    • http://seattlecitycoach.com/uploads/1/3/0/2/130271126/a20aa9.pdf
    • http://baylandesign.net/uploads/1/3/0/8/130814714/130814714.html#present+perfect+continuous+tense+sentences+in+english

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea0.bin
3d67999bfeb2d03f7e9499e508ebf54bde57495664f46a1acbee8e28857be2aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA0 7736 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.