Malicious PDF — malware analysis report

Static analysis result for SHA-256 46783ddbc81e2adf…

MALICIOUS

PDF

39.8 KB Created: 2020-03-09 09:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9f11370b47f692bf927dce9a608f0553 SHA-1: 8f2763231965801c6be54b01a5650bc5e1b4209c SHA-256: 46783ddbc81e2adff73b19276d878f7a4a9c16800f1d360be0153e8936752547
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, many of which are disguised as educational resources. The ML classifier strongly indicated maliciousness. The primary attack vector appears to be a link farm designed to redirect users to potentially harmful content hosted on various domains.

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://cpanel.jacksonvilleartistsguild.org/uploads/1/3/0/6/130605135/130605135.html#cbse+class+10+sample+papers+2018+pdf+free+download
    • http://www.gzowskicollege.com/uploads/1/3/0/5/130589454/4286810.pdf
    • http://raysohn.com/uploads/1/3/0/6/130604195/1194082.pdf
    • http://siddhearta.com/uploads/1/3/0/6/130620536/ruraxoba.pdf
    • http://mykdphotography.com/uploads/1/3/0/5/130551536/totomakogixepewok.pdf
    • http://tropicsofhaiti.com/uploads/1/3/0/3/130312964/bujisawaradasodo.pdf
    • http://www.spacexuk.com/uploads/1/3/0/9/130969331/rakijobezarefaka.pdf
    • http://allbigskyre.com/uploads/1/3/0/6/130639152/jiwegebaluxezi.pdf
    • http://ontargetgunworks.com/uploads/1/3/0/6/130639750/sopojebotevezi.pdf
    • http://methodpotentialhmc.com/uploads/1/3/0/5/130550961/malukap_jamifoz.pdf
    • http://bartorg.com/uploads/1/3/0/4/130490421/jotajeto-sawozafomum-bowumemu.pdf
    • http://hookahdaddy.net/uploads/1/3/0/2/130272979/820c0e9791358.pdf
    • http://bafandbaf.com/uploads/1/3/0/9/130969837/fonulujibago-debapovifogesu-zorezam-metuwaxerazaxu.pdf
    • http://roycereinecke.com/uploads/1/3/1/0/131070786/3299594.pdf
    • http://autodiscover.mackenziefreed.com/uploads/1/3/0/5/130547924/4354f1e3538e.pdf
    • http://www.bestbefrank.com/uploads/1/3/0/7/130740146/6553683.pdf
    • http://chriswongfitness.com/uploads/1/3/0/6/130604342/katamoso_latimejilu.pdf
    • http://mta-sts.culturelli.fi/uploads/1/3/0/5/130589123/90238b.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_off0000736c.bin
909f3260d839f9561e367273cd9c9c20cb6e2fecec952bc96a8c63641fa71c25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736C 7740 bytes

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