Malicious PDF — malware analysis report

Static analysis result for SHA-256 70083f4e28aeb18b…

MALICIOUS

PDF

36.1 KB Authoring application: Soda PDF
MD5: 674e7624855e167ed6d887a490db0969 SHA-1: eabd584cb2bcf2a2ccae781d393db33de69c23a3 SHA-256: 70083f4e28aeb18b63a2b8532d2ff4248206a3b8d33f8c7a75e420818d873a2e
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to leverage external resources for a malicious payload or phishing 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://rocorirobotics.com/uploads/1/3/0/7/130775758/xurowusisusokukinij.pdf
    • http://houstonrealtorleads.com/uploads/1/3/0/7/130740429/7472903.pdf
    • http://micropapillarybreastcancer.org/uploads/1/3/0/2/130289172/pimadonofigomopijo.pdf
    • http://vehda.com/uploads/1/3/0/7/130775328/xoxiturakudizawofegi.pdf
    • http://propertiesbypaula.com/uploads/1/3/0/6/130620520/4782791.pdf
    • http://monicacarrollart.com/uploads/1/3/0/6/130604557/04a92.pdf
    • http://1504magaz.space/uploads/1/3/0/5/130540824/muxatebigozaki.pdf
    • http://brownbox1.com/uploads/1/3/0/3/130313624/2656681.pdf
    • http://88broker.com/uploads/1/3/0/8/130874580/texobepiwuzuve.pdf
    • http://nfstoryboard.com/uploads/1/3/0/5/130588980/4385621.pdf
    • http://delegationband.com/uploads/1/3/0/5/130550936/buvexoxudono.pdf
    • http://everestdobie.com/uploads/1/3/0/8/130874194/130874194.html#bubble+sort+algorithm+in+data+structure+using+c

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033b5.bin
1f934f6efb5d0555de0c2ff534b59778bc8efccd7e4b8d10d91334e411fccdf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33B5 8844 bytes

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