Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e6df7a0ab3674f…

MALICIOUS

PDF

66.7 KB Created: 2021-03-15 01:22:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b893e397534ddeac55af4fc6e3a1669 SHA-1: 9cba759370879b5454c71db5e0d3835280a80c80 SHA-256: 08e6df7a0ab3674f717de4ae6bd0bc3d1cd9ee552e47a52f1c67763e52c56e49
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 classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external links, including one to `leonvi.ru` which appears to be part of a link farm, suggesting an attempt to redirect users to potentially malicious sites. The document body, though heavily obfuscated, contains keywords related to online marketing and product promotion, reinforcing the phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/wix?keyword=flat+belly+fix+clickbank
    • https://cdn.sqhk.co/xelajuwodaf/bFShb6e/wii_bowling_1000_pins.pdf
    • https://cdn.sqhk.co/sudidoxa/Hohc3WQ/burnout_drift_hilltop_online.pdf
    • http://tekozobobiwo.22web.org/xuxug.pdf
    • https://cdn.sqhk.co/gonolesuzam/jAibujd/wood_craft_ideas_to_sell.pdf
    • http://axacheat4.xyz/gre_maths_questions_with_answersel0rj.pdf
    • http://sallehq.xyz/88911159621dkair.pdf
    • https://cdn.sqhk.co/tiwopaperuv/K3hfiiO/10296178412.pdf
    • https://cdn.sqhk.co/rubogomuweme/hahdyuU/66776643756.pdf
    • http://studyweb.site/blank_space_piano_sheet_music_freer0jpg.pdf
    • http://itrom.fun/que_quiere_decir_titulo_azul_selladosbkut.pdf
    • https://cdn.sqhk.co/pimibopugugo/zgi2kjj/pin_circle_apk.pdf
    • https://cdn.sqhk.co/jawutuwek/iaie7ii/plants_vs_zombies_heroes_wikipedia.pdf
    • https://cdn.sqhk.co/kagelemovo/jhfhbf9/wawukilenixipuraxugoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_aa69e45b934740e0a5c98cd9a8ecff29.pdf?index=true
    • https://7980b0ff-2efe-48f4-a442-6c87bca80713.filesusr.com/ugd/9bd8c3_16cc7c383e7248819f87057efe815a55.pdf?index=true
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_ffd6a3f9914e42018fd86bb9ae98eaa0.pdf?index=true
    • http://wikeziduloduw.rf.gd/how_to_install_honeywell_smart_thermostat_without_c_wire.pdf
    • https://s3.amazonaws.com/jowutoneranemuk/duelyst_wiki_guides.pdf
    • http://mujijebal.epizy.com/38190827502.pdf
    • https://4e4301d6-cc9a-4939-960a-6b497c1efea6.filesusr.com/ugd/d78803_e03f2c6962084c828c3e1104a9debee1.pdf?index=true
    • http://talifox.rf.gd/english_idioms_with_meaning_download.pdf
    • https://s3.amazonaws.com/pajeriramal/31117995303.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca2d.bin
166aa6356a1b5282a7dc94a683d508cbc09cdff3bf8be765e38a093a6a1b55f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2D 4932 bytes
font_01_sfnt_off0000db26.bin
9e42e5f1c1c35a423b61a87e070f5164a347d8ab1d92ba7ffc420498665c1562		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB26 10160 bytes

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