Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b6e1a7ad64c558…

MALICIOUS

PDF

30.9 KB Created: 2020-05-22 19:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98aa2b8813024044c80d0d9d7e4fd2fb SHA-1: 19cc8322a5cd9abbc6a6f784f951175c78dfedde SHA-256: 56b6e1a7ad64c558089b10274a454bc4e6fdda2258169c6a9606a50fcdb8c98f
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to various subdomains, indicative of a link farm or SEO poisoning tactic. The primary URL points to a document that appears to be a lure, referencing 'Animal behavior alcock 9th edition p'. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this PDF is part of a larger network designed to redirect users to malicious content or phishing sites. 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://podollanrgp.devsite-1.com/uploads/1/3/0/2/130272421/130272421.html#animal+behavior+alcock+9th+edition+p
    • http://lishafoodieaustralia.com/uploads/1/3/0/3/130379179/8372313.pdf
    • http://michaelakwoka.com/uploads/1/3/1/1/131164112/parit_lumunaj_visigojebur.pdf
    • http://marburybaseball.com/uploads/1/3/0/9/130969624/602245849fb.pdf
    • http://fulltimescience.com/uploads/1/3/0/5/130590043/rugijasoxetepit.pdf
    • http://tiaraarts.com/uploads/1/3/0/5/130538925/dca4176380d0.pdf
    • http://kiddw.com/uploads/1/3/0/7/130739098/4994794.pdf
    • http://stolani-shoes.com/uploads/1/3/1/8/131857527/9584570.pdf
    • http://kyledropp.com/uploads/1/3/0/6/130639409/rafofitoxeme_xukobaj_siwubusapito_lunesugofaw.pdf
    • http://healthcarejustice-pbc.com/uploads/1/3/0/3/130379101/564570.pdf
    • http://hadnettsolarsolutions.com/uploads/1/3/0/7/130740623/tiginekoz.pdf
    • http://nfpinoc.com/uploads/1/3/1/1/131163601/juguxexajerovo.pdf
    • http://ironbeardcompany.com/uploads/1/3/0/6/130621465/1234264.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_off00004ec0.bin
36885dfc0aed9c25e6e2e0d55811c54fa7eba1d0fa6c3909c516147056dcf734		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EC0 9840 bytes

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