Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab0edcf21e0f331…

MALICIOUS

PDF

73.4 KB Created: 2021-03-27 10:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff7595b103aa04cd682747dda9cbee50 SHA-1: d0692fa5bad5be986136ea7c54b4469835dc47f3 SHA-256: 7ab0edcf21e0f331934d24028c1eb6f3352da69e3211af2d92b277f2a5ef57a5
136 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely used to host a phishing page or distribute further malware. The heuristic 'SE_LOLBIN_RUN_COMMAND' suggests potential command execution, though the exact command is unclear due to obfuscation. The presence of multiple suspicious URLs further supports a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://mezovuduw.ru/wix?keyword=voluntary+migration+ap+human+geography+example
    • http://lightstart.xyz/28465330050rooja.pdf
    • http://epaytds.xyz/bitimasejipaludetifatidukvz0p3.pdf
    • http://shop-onlinediscount.xyz/2017_military_pay_chartzkbt9.pdf
    • http://taxokijoba.sportsontheweb.net/punusiwupevakusubu.pdf
    • https://cdn.sqhk.co/wubunepan/4jd2ia1/59870114119.pdf
    • http://levantegroup.net/kilolijefaduwuvesarul2xgt.pdf
    • https://cdn.sqhk.co/kezixowog/ictjhzV/lifevajukuvovive.pdf
    • http://itash.space/21539222468cvf04.pdf
    • http://golomashvanna.xyz/mavokowajaxokufaxevores034e.pdf
    • http://mojenisijita.mywebcommunity.org/insurgent_full_movie_download_in_tamil.pdf
    • https://cdn.sqhk.co/gukijenof/Lu8ihSY/playstation_5_restock_date_canada.pdf
    • http://poverkavoda.website/lobobivowisgb3fl.pdf
    • http://8bitbeardsco.com/45903903558n7xun.pdf
    • https://cdn.sqhk.co/titabofasika/GgftT0t/bidajoxedurumowe.pdf
    • http://zevibeponakat.getenjoyment.net/23745993572.pdf
    • http://gukiduwonaxinef.getenjoyment.net/zikulov.pdf
    • https://cdn.sqhk.co/sosexazefip/jiahbha/business_accounting_major_salary.pdf
    • http://damomemisogadex.iblogger.org/lonenimopef.pdf
    • http://dizotegi.iblogger.org/dekago.pdf
    • https://cdn.sqhk.co/rapurakoke/UkygcMD/subway_princess_jungle_adventure_sims_4.pdf
    • http://probnik1313.tech/guitar_bar_chords_chartublms.pdf
    • https://cdn.sqhk.co/sofetarunox/kUEZLhf/multiple_filters_in_excel_sheet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pafisepobisu.rf.gd/biosynthesis_of_purine_and_pyrimidine_nucleotides.pdf
    • http://pasivete.epizy.com/tenato.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_off0000da5a.bin
6ac0112452e3c525c95a5ef4328e89cff350873ed664f72a486be70bb79c9fb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5A 5188 bytes
font_01_sfnt_off0000ebdf.bin
d0f49cc195c1bf31025e9f0e2a1c0016543c567966f58b7536460b272fcd7c9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDF 1716 bytes
font_02_sfnt_off0000f46a.bin
11de892c1b193415d52e2a6476007f8b68a2d613b9602b94d717b8867f782f12		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF46A 10184 bytes

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