Malicious PDF — malware analysis report

Static analysis result for SHA-256 e93ede42706608ca…

MALICIOUS

PDF

76.4 KB Created: 2021-03-29 05:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b09c498b8ef462b3a850278258ba13a0 SHA-1: da05751f4b883c78060898fd06533175c5538f7d SHA-256: e93ede42706608cae544f76dadf4564794f4fe7061e3fb48add86c10c482e167
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The presence of a large number of external links, including one pointing to 'druttle.ru', suggests a link farm or SEO poisoning attack. The embedded URLs likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://druttle.ru/wix?keyword=maaco+collision+repair+%2526+auto+painting+houston
    • http://gatorama.space/mepokev6me5.pdf
    • http://freshka.fun/63500165682b36h.pdf
    • http://stepka2016.xyz/saburebabaxuzukexe74140.pdf
    • http://natorg.fun/pesisevu2xcf6.pdf
    • http://lnstagramverifiedbadge-media.com/9783379840vnxao.pdf
    • http://thelait.pro/dirt_devil_easy_lite_7.2v_manualxu4td.pdf
    • http://whitetwo.space/model_3_white_interior_swapush9r.pdf
    • http://eglo.club/samsung_balanced_scorecardx67g0.pdf
    • http://mosdendy.store/7_tipos_de_comunicacin_masivarvx79.pdf
    • http://pshcomonhere.xyz/80395671355wamrj.pdf
    • http://rusakova.space/marine_net_warfighting_answersvrioo.pdf
    • http://antileqphh.site/serial_de_oro_windows_8.1_pro_2020chs4e.pdf
    • https://static.s123-cdn-static.com/uploads/4375080/normal_5fdf7a5ebca9b.pdf
    • https://cdn-cms.f-static.net/uploads/4383146/normal_601f26e559fa9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://2ddc7431-ff91-46e9-9708-195efd6cc195.filesusr.com/ugd/ffe0d3_a8973ef4844e45008873cd847bb6cd3b.pdf?index=true
    • https://2c5a832e-93c4-4ab0-bef0-969ef348d747.filesusr.com/ugd/cc5daa_9aa45f444e1c4e089eb985f258e86f22.pdf?index=true
    • https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_4c4ef7f1b42649c48577c986ce5c34e3.pdf?index=true
    • https://6bc61794-ec17-45f1-96eb-8bed4cd57308.filesusr.com/ugd/217b8a_daa25618970145d8aab5326f4d769222.pdf?index=true
    • https://72dfff08-f6cb-4f5d-aaac-ebe71175d6a6.filesusr.com/ugd/c268f7_72e06ceb0cd343e5a4383390fba14892.pdf?index=true
    • https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_1b011b069e544b7abc7986ee57567973.pdf?index=true
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_6443d78824f0439ebcb63ceb4b210f71.pdf?index=true
    • https://855e1e5b-0daf-4dce-aa73-dfad2bfec5df.filesusr.com/ugd/ced2dc_5ec7fd1565bb49c88824b6f78c49a1a0.pdf?index=true
    • https://d89d6b52-6e76-4e18-bccb-bd7428cfddad.filesusr.com/ugd/02beb7_ffd41d9e43c541debc48e43adaa57cd0.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e762.bin
610c47f2176f7485bf8ab97192d7f7322eeafe144b33a33b8b2c03a87f09c150		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE762 4932 bytes
font_01_sfnt_off0000f843.bin
ec25fe1945e41b104a1b4a0f8929af062997403fa4dbb4cd9541b16eae349f24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF843 12416 bytes

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