Malicious PDF — malware analysis report

Static analysis result for SHA-256 a88fd53d192e1c27…

MALICIOUS

PDF

46.2 KB Created: 2020-04-10 03:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 020536326dd0529aea855eb4df9400f7 SHA-1: 88f9b08bcb029b3e3dc37b6245a6d6127125fefb SHA-256: a88fd53d192e1c27e360267919c61b8680326577295a86fffc088bcb536a6a4d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits characteristics of a link farm, with a heuristic identifying a mass of external PDF links. The document body, though partially corrupted, contains references to a 'John Deere rx75 repair manual', suggesting a lure to entice users to click on the numerous embedded URLs. These URLs likely lead to further malicious content or phishing pages. No scripts were extracted from this sample.

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.
  • 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://timeframingconsulting.com/uploads/1/3/0/7/130739308/130739308.html#john+deere+rx75+repair+manual
    • http://campbellsgifts.net/uploads/1/3/0/7/130740211/0edce062.pdf
    • http://excelerationfoundation.com/uploads/1/3/0/5/130541950/f374403c690afbf.pdf
    • http://muddytrailsoap.com/uploads/1/3/0/9/130969471/9c426986f30e5.pdf
    • http://marslanderchallenge.com/uploads/1/3/1/3/131381544/8872675.pdf
    • http://ollimajart.com/uploads/1/3/0/7/130738962/4806804.pdf
    • http://skinweekly.com/uploads/1/3/0/7/130775665/javevutuxilipabaw.pdf
    • http://pinetoplodge.com/uploads/1/3/0/6/130604187/00b8d252b1847.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_off00008b9c.bin
6892849c19ac7f220076520c6213300a9fd24bef054369c11a2006c5546bd676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9C 8656 bytes

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