Malicious PDF — malware analysis report

Static analysis result for SHA-256 c65f0d0ed2b8ed62…

MALICIOUS

PDF

74.3 KB Created: 2021-04-02 22:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7630b701c7dd5ff4f02332f4a77e286 SHA-1: 8d2d21ec937934934f6b85c7d76aac8e6679304e SHA-256: c65f0d0ed2b8ed62bb9d502caaca68df7f8c8247ee812a3b6fd4250375f69555
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning model as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external links, many of which are part of a link farm designed to direct users to potentially malicious websites. The embedded URLs suggest an attempt to redirect users for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://pelibifir.ru/wix?keyword=jake+and+the+neverland+pirates+bedtime
    • https://cdn.sqhk.co/kubabulukod/jhQFSgh/prison_break_season_6_release_date_2020_netflix.pdf
    • https://mawanegofarate.weebly.com/uploads/1/3/4/4/134466522/tativadapilu.pdf
    • https://pejadalat.weebly.com/uploads/1/3/0/7/130775017/988c56f.pdf
    • https://cdn.sqhk.co/kugoxepif/haM2GX4/juvakepibikominujuxasi.pdf
    • http://tihefers.online/how_to_write_an_appraisal_report_exampleurdo7.pdf
    • http://alcozerox.com/super_jungle_world_runcq7zi.pdf
    • https://cdn-cms.f-static.net/uploads/4385422/normal_5fdc7296a169f.pdf
    • https://static.s123-cdn-static.com/uploads/4421210/normal_5fc675bba6b70.pdf
    • https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/vitizupepevijilixa.pdf
    • http://torchqbfl.fun/45844279547aei5h.pdf
    • https://janodapos.weebly.com/uploads/1/3/1/6/131636969/8313076.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://c1908cc8-b41e-4b5b-ab1c-53d28a7f2745.filesusr.com/ugd/913720_21f6a36d476e4be4b795d94a06988d4d.pdf?index=true
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_6970a9ae43ba41d0a1560733ee31bb7d.pdf?index=true
    • https://e108c0fa-8e70-4110-aab7-e0d30777705f.filesusr.com/ugd/d9966b_ab251cb929a1479b911616cf0a08f8af.pdf?index=true
    • http://vuwilup.epizy.com/27322085851.pdf
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_4e78bd2ad4e84b5c900697b9cb30b98f.pdf?index=true
    • https://694dae7a-2033-4a59-8b06-91ff4eec0774.filesusr.com/ugd/e1d58f_6a1d803b357743688990723cc464c795.pdf?index=true
    • http://wovutemikinodow.rf.gd/34056021961.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d62f.bin
362522a2ac970236a5ed1c9a9813934125bf0fde021418fa4156bebecf0ae3e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD62F 5132 bytes
font_01_sfnt_off0000e763.bin
d86e3a5d54961e159400130c42f9538380395bffdc9b272ed951241f8edbb5eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE763 10780 bytes
font_02_sfnt_off00010c11.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C11 4324 bytes

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