Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd992e004f0c1d4…

MALICIOUS

PDF

42.8 KB Created: 2020-04-08 14:16:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 724c96e2979f4e75625b45d6cd842d5c SHA-1: ed4652ad98f97286a42b5294f6df36f6a2b1abbb SHA-256: 3cd992e004f0c1d4642368b2574f0e59492d66cf261140936f021cabc65cc340
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary link points to http://redondoink.com/uploads/1/3/0/6/130621307/130621307.html#simple+crossfit+workouts+at+home, which appears to be part of a link farm. The document body is largely unreadable binary data, but the presence of numerous links suggests a malicious intent to redirect users to potentially harmful websites. No scripts were extracted from this sample.

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://redondoink.com/uploads/1/3/0/6/130621307/130621307.html#simple+crossfit+workouts+at+home
    • http://nextlevelemergence.net/uploads/1/3/0/7/130776755/2168298.pdf
    • http://loralangdesign.com/uploads/1/3/0/5/130543761/morunuvaxo.pdf
    • http://mjfitness247.com/uploads/1/3/0/6/130604449/8040951.pdf
    • http://bylaurieb.com/uploads/1/3/0/9/130969509/1367498.pdf
    • http://vhouse2020.com/uploads/1/3/0/4/130483682/sebutirujof.pdf
    • http://thecraigperryfoundation.org/uploads/1/3/1/4/131409090/rinupovinirelu.pdf
    • http://viptraininghub.com/uploads/1/3/0/9/130969648/585243.pdf
    • http://texasassociation.net/uploads/1/3/0/5/130588357/jumujudigoga.pdf
    • http://ogunquitbarbershop.com/uploads/1/3/1/4/131453633/eb0f28d.pdf
    • http://mmpiconsulting.com/uploads/1/3/0/6/130639824/4936e68cddeedb5.pdf
    • http://teamtorian.com/uploads/1/3/0/6/130604148/dofagerepa-gomabazimib-zadige-popatasugagixep.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006835.bin
596b3d0c0830240984c48578757bdb4bb7ad9d9d4dd055165671f7c6de7d193d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6835 8112 bytes
font_01_sfnt_off000087a4.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87A4 16036 bytes

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