Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74e22b05fd6fefb…

MALICIOUS

PDF

32.0 KB Created: 2020-04-15 21:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b1839d177ab5ef95d187e7d32b10782a SHA-1: 96063d9bb588abdcfba624a9d827ba27b4d23282 SHA-256: b74e22b05fd6fefbe8dc96426de8c07bbe09b8c2a046bdb66851b186e4646027
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. The presence of numerous URLs pointing to similarly structured domains suggests a link farm or a coordinated distribution effort. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://theothertd.com/uploads/1/3/1/3/131398024/131398024.html#machinarium+android+4pda
    • http://buffshoecabinet.com/uploads/1/3/1/4/131437331/xutonololilutalogu.pdf
    • http://vclicckks.com/uploads/1/3/0/5/130551782/8597877.pdf
    • http://my-gentech.com/uploads/1/3/1/4/131453156/botopiwerimixef.pdf
    • http://gokayaking16.com/uploads/1/3/0/4/130478123/bb5d53ca4ce292.pdf
    • http://vl-capital.biz/uploads/1/3/0/5/130539419/5000761.pdf
    • http://matildascookies.com/uploads/1/3/0/5/130542968/dovemad.pdf
    • http://jeffleblow.com/uploads/1/3/0/6/130640069/dopuveg.pdf
    • http://velocityracingteam.com/uploads/1/3/1/0/131070938/8e2765025cc92.pdf
    • http://resourcef.com/uploads/1/3/0/5/130543552/4247427.pdf
    • http://ilifeless.com/uploads/1/3/0/2/130289773/zikokazigebisug.pdf
    • http://flippersnursery.com/uploads/1/3/1/4/131438667/fafifexezizir-xerasakafo.pdf
    • http://lastdayunloved.com/uploads/1/3/0/5/130551864/a2a59539aa.pdf
    • http://abidingheartshomecare.org/uploads/1/3/0/6/130604803/jowirobuwoj_lexase_bolativasoked.pdf
    • http://themrswelch.com/uploads/1/3/0/2/130272592/edf1ac.pdf
    • http://javiergutierrezinfo.com/uploads/1/3/1/0/131070366/dedosamulupibigu.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_off000052ea.bin
32085243b40bc6df470607871d3d9d24c092a1fe25cde1c70bebdd300ebcd367		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52EA 9648 bytes

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