Malicious PDF — malware analysis report

Static analysis result for SHA-256 b94451703f463eae…

MALICIOUS

PDF

32.5 KB Created: 2020-03-30 12:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9ba76e0e4eda179af285ac3effef0230 SHA-1: 8dfdb36155113d2c30e62e2f2f6fa43c465c12fe SHA-256: b94451703f463eae2398750473051c421a39b421c1f56d7d4be5caa740cdbdb7
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 flagged this PDF as malicious. The embedded URLs point to various domains, suggesting a distributed infrastructure for hosting content. No scripts were extracted, but the primary attack pattern is the extensive link farm.

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://amazingjourneytravel.voyagerwebsites.com/uploads/1/3/0/7/130776873/130776873.html#marcum+vx+1p+review
    • http://host37.carmichaelnl.com/uploads/1/3/0/8/130873912/xefojudolonawe-motokekakuximav-wuvonig.pdf
    • http://junkremovaldenverco.org/uploads/1/3/0/4/130483428/semodipivis-kigarolum-jezidiwekedej.pdf
    • http://nellbeckerman.com/uploads/1/3/0/3/130323996/zuzeralukitakoka.pdf
    • http://vets-code.org/uploads/1/3/0/7/130775405/1c7479b2b.pdf
    • http://74-123-79-184.mgwnet.com/uploads/1/3/0/3/130379389/2494963.pdf
    • http://coopsound.com/uploads/1/3/0/9/130969655/9543642.pdf
    • http://spectacleministries.com/uploads/1/3/0/5/130588635/jopixozelowikoj.pdf
    • http://myservicesandproductstand.us/uploads/1/3/0/7/130738845/satasuke.pdf
    • http://djanelcreativearts.com/uploads/1/3/1/0/131071249/1835197.pdf
    • http://timsyth.com/uploads/1/3/1/3/131383791/6288156.pdf
    • http://juliaraaf.com/uploads/1/3/0/8/130874455/209822.pdf
    • http://magicfoodbus.org/uploads/1/3/0/3/130312957/7651245.pdf
    • http://rebeccazipprich.com/uploads/1/3/1/4/131409442/lemofufenin.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_off00005ab1.bin
62bf6ae975d29e150a5fe8a86f6c9f76d7bde187d436805b483d157005718a6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB1 6688 bytes

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