Malicious PDF — malware analysis report

Static analysis result for SHA-256 69167e8cb988edde…

MALICIOUS

PDF

45.5 KB Created: 2020-03-12 08:23:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 95d53fd0812a03ddac84b74114a43de1 SHA-1: 0a836a04b61c8997ed6e84107ee0b219d8dc2c4f SHA-256: 69167e8cb988edde9fa4ff62478b755fc3324b6382f0372bef80baa2069eb6cf
96 Risk Score

Malware Insights

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

The PDF document contains numerous external links, identified as a link farm, designed to redirect users to various websites. The document body, though partially obfuscated, includes text related to meeting notices and agendas, likely serving as a lure. The presence of embedded URLs and the heuristic firing for PDF_SEO_LINK_FARM strongly suggest this document is part of a campaign to drive traffic to potentially malicious sites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://6jfes.slpny.com/uploads/1/3/0/9/130969053/130969053.html#what+is+notice+agenda+and+minutes+of+a+meeting
    • http://www.jsdrivein.com/uploads/1/3/0/4/130476242/lanetumusarapedi.pdf
    • http://annesaariketo.com/uploads/1/3/0/7/130775092/8293401.pdf
    • http://minhavidaminhasescolhas.com/uploads/1/3/0/7/130738978/pononam.pdf
    • http://www.playscapesinsite.com/uploads/1/3/0/5/130547207/divasasowi-birasigig-sipijevagunuku.pdf
    • http://bisforbravo.com/uploads/1/3/0/6/130605443/7244406.pdf
    • http://nataliegarces.com/uploads/1/3/0/6/130605159/4374f9d.pdf
    • http://thepadremotel.com/uploads/1/3/0/3/130313015/migilinudu.pdf
    • http://sunnyvalecoffee.com/uploads/1/3/0/7/130739443/kosagadojo.pdf
    • http://amanziqs.co.za/uploads/1/3/0/2/130287547/496999.pdf
    • http://www.craftsmanmarketing.com/uploads/1/3/0/8/130814342/pubulozafamube.pdf
    • http://ksupayroll.com/uploads/1/3/0/8/130874156/4723835.pdf
    • http://tcca.shop/uploads/1/3/0/3/130323337/xovorodurun.pdf
    • http://www.aomsd.com/uploads/1/3/0/6/130620556/30005e3f67da329.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008747.bin
0c0872cc086d779bd738ce33d1bd0b4696fd76e9d64d0a22c17073ce0855af45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8747 8308 bytes

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