Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0da2721200f55e4…

MALICIOUS

PDF

37.4 KB Created: 2020-04-13 09:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9803e9ed5b55c4d5664f33a4daeb1a11 SHA-1: 53f182b1441fcdffb1df87389084e049446e3ca8 SHA-256: f0da2721200f55e4eec68844ae4efc7d9292beed6cb4a7ac12beab178a47e7ca
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files hosted on similar domains. This pattern is indicative of a link farm, often used to distribute malicious content or manipulate search engine results. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://khpottery.com/uploads/1/3/0/6/130620248/130620248.html#que+es+sinecdoque+ejemplos+cortos
    • http://allianceagonline.com/uploads/1/3/0/5/130550684/9045406.pdf
    • http://sunnydaybistro.com/uploads/1/3/0/6/130620240/vuzawaruz_nurefovetet_posafakalu_vanorenujagepit.pdf
    • http://bloxy-shop.com/uploads/1/3/0/7/130775560/weraban.pdf
    • http://manifestyourdestini.com/uploads/1/3/1/1/131163751/1565985.pdf
    • http://rocketamusements.net/uploads/1/3/1/4/131437418/0e43621b.pdf
    • http://restoredknights.com/uploads/1/3/0/9/130969706/nobame_garonanogul_ruxefaxipisevi_jeloxefibi.pdf
    • http://takethetonic.com/uploads/1/3/0/5/130550697/kukikamimufofon-xefojukevukomu-mukanisi.pdf
    • http://dtlholidayfest.com/uploads/1/3/0/4/130490410/840c2.pdf
    • http://rocketamu
    • 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_off000066a7.bin
fd92fe88fea1de436fe106485b2d81f5b162de633a6d4219d3aaf51243215203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 9284 bytes

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