Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e6ead55ee034d8d…

MALICIOUS

PDF

40.5 KB Created: 2020-04-12 07:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 35b3cf87a05d2c170dae641aa2422cf6 SHA-1: 1e38054f567157ddf76ed5c8ed265e602a377e24 SHA-256: 2e6ead55ee034d8d2ffbeff58911a87fd188ae73ad607b49655774aa0fda46c8
94 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large number of external URLs. The document body, though heavily obfuscated, contains references to a 'Us army survival manual', suggesting a lure to entice users to click on the embedded links. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this is not a legitimate document but rather a mechanism to distribute links, likely for SEO manipulation or to host further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://givehim5.net/uploads/1/3/0/2/130273896/130273896.html#us+army+survival+manual+fm+3-05.70+pdf
    • http://missbsgarden.com/uploads/1/3/1/1/131163693/jefon-poxojafizig-kejoji-rupotivez.pdf
    • http://goylegroup.com/uploads/1/3/0/2/130270923/zumaxo-xujojoni.pdf
    • http://rajplacements.com/uploads/1/3/0/6/130639591/1124773.pdf
    • http://nativelabjp.com/uploads/1/3/0/2/130291478/e373c.pdf
    • http://tgillikinphotography.com/uploads/1/3/0/4/130483860/wozetuxerutuvipade.pdf
    • http://vaughanestatehomes.com/uploads/1/3/1/3/131379718/cd755f77f591d.pdf
    • http://leathernecklandscapingandcleaning.com/uploads/1/3/1/4/131406295/naloluwo.pdf
    • http://winecountryappraisals.com/uploads/1/3/0/4/130475883/8111594.pdf
    • http://mywashcard.ca/uploads/1/3/0/2/130291640/7301157.pdf
    • http://orbitsingle.com/uploads/1/3/0/7/130739889/4312517.pdf
    • http://weiszsports.org/uploads/1/3/1/6/131636727/5860b6221a8c453.pdf
    • http://keith-allred.com/uploads/1/3/0/2/130270804/faa83c00a1201b.pdf
    • http://universalpriorities.org/uploads/1/3/1/4/131454172/dc81f49880372b.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_off0000758c.bin
d2f4169ef844d6f4fb2e0c87014256256aff79ddf3e0ff17d6c32b4fa42b9743		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758C 8488 bytes

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