Malicious PDF — malware analysis report

Static analysis result for SHA-256 99252f48efead9aa…

MALICIOUS

PDF

40.1 KB Created: 2020-05-20 15:42:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99e59b5357adc70521a44191fe186484 SHA-1: e73a0fd73e0e926dc6e459fc01bd560e9c473b5a SHA-256: 99252f48efead9aa44cf790b571133cf04761c2baab49f5ff263c90ddd306cb7
92 Risk Score

Malware Insights

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

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 primary attack pattern involves directing users to a farm of external PDF files hosted on various domains, likely to obscure the ultimate destination or to spread malicious links.

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://salesraider.com/uploads/1/3/0/7/130740124/130740124.html#present+value+table+pdf
    • http://thesquirrelsnest.net/uploads/1/3/0/3/130313013/ca58cf043539.pdf
    • http://candytymegifts.com/uploads/1/3/0/6/130621500/6cb436783e2ecdc.pdf
    • http://storytellermco.com/uploads/1/3/1/8/131856212/843579.pdf
    • http://redpilltokens.com/uploads/1/3/0/5/130589244/jopeme.pdf
    • http://reprocura.com/uploads/1/3/1/4/131483148/kiwakugoj.pdf
    • http://phillipseditingva.com/uploads/1/3/0/4/130476054/ed9f2ee58930c.pdf
    • http://steppingoutsteppingin.net/uploads/1/3/0/5/130588333/fc4b2060c.pdf
    • http://willemwijs.nl/uploads/1/3/0/6/130639896/4535133.pdf
    • http://isp-sportmanagement.com/uploads/1/3/0/4/130483140/wemefudarazet.pdf
    • http://stephenudem.com/uploads/1/3/1/8/131857818/b68e32d25ec.pdf
    • http://twistpalmleaf.com/uploads/1/3/1/6/131606069/gemid-wafosagokimuxin.pdf
    • http://juliejesternewman.com/uploads/1/3/1/3/131384436/gazisegidi.pdf
    • http://grassninjausa.com/uploads/1/3/0/2/130289259/fuzikalewisum.pdf
    • http://elevatesportsfitness.com/uploads/1/3/1/8/131857060/9799990.pdf
    • http://newyorkhoopdance.com/uploads/1/3/0/7/130775997/mototuselipuxi.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_off00006fa4.bin
f8e03998c1e87c47fa868162abbcb2a2a12a489615c4c7d0042a88cd7038138d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA4 11044 bytes

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