Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bacb3d6d9f64533…

MALICIOUS

PDF

47.0 KB Created: 2020-03-28 06:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a657250598ad5790bc1aeeedb5cbdef3 SHA-1: 1cddc9659bfee487b9643b855e6137e560abc3f0 SHA-256: 2bacb3d6d9f6453380f70bc8f31e7a44953563d5fd29623242d11f93178ac8ed
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted across numerous domains, indicating a link farm or distribution mechanism. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves directing users to these external resources, which could host further malicious content or be part of an SEO poisoning scheme.

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://heritagebakedgoods.com/uploads/1/3/0/5/130589348/130589348.html#the+imitation+of+christ+by+thomas+%C3%A0+kempis
    • http://martahewett.net/uploads/1/3/0/4/130483981/kodilipefixusopezen.pdf
    • http://lifechangesupstatesc.com/uploads/1/3/0/7/130739204/2948503.pdf
    • http://lacrl.us/uploads/1/3/0/5/130539046/nipasal_tozozow_rikabazineran_tepepamumazus.pdf
    • http://bigsmasher.org/uploads/1/3/0/7/130774968/gowosir.pdf
    • http://fitforfreeboston.com/uploads/1/3/0/7/130740429/74a2323.pdf
    • http://emmaparkmontessori.com/uploads/1/3/0/9/130969403/549554.pdf
    • http://www.priscillabrownphotography.com/uploads/1/3/0/8/130813314/7362297.pdf
    • http://fairedfundingny.org/uploads/1/3/0/4/130483402/3e87175.pdf
    • http://piqiplay.com/uploads/1/3/0/6/130639868/zajobilu.pdf
    • http://nebraskatowshow.com/uploads/1/3/0/6/130621013/9023883.pdf
    • http://elevationmillwork.com/uploads/1/3/0/7/130774977/8fbd70.pdf
    • http://slogan.nodreaming.com/uploads/1/3/0/5/130588989/beledujuzesa-waribomiv.pdf
    • http://nwcinc.org/uploads/1/3/0/5/130590482/pugulapujib-naniwugukuxon.pdf
    • http://theouterlookinc.com/uploads/1/3/0/5/130550787/xopogune-kelolo-tipet.pdf
    • http://www.bsdcouture.shop/uploads/1/3/1/0/131071278/furubexilejajudipe.pdf
    • http://getyourbody.org/uploads/1/3/0/7/130740209/8831868.pdf
    • http://new.iprwyoming.org/uploads/1/3/0/6/130639883/ebfe28af58de8.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_off00008dee.bin
e86869cca9c65b61a44a04f46cf058aff76886149a49cdbe589a93bd3244b2c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEE 7892 bytes

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