Malicious PDF — malware analysis report

Static analysis result for SHA-256 3247a61bced814c0…

MALICIOUS

PDF

74.7 KB Created: 2021-04-06 21:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03ad7ce319152200994d94ed13a3501f SHA-1: e2c69499f76a095f5bda1a65cf79e44ccc35011e SHA-256: 3247a61bced814c07432a6dde2fa1c745374511806b988eb77de781ddb9a0e90
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, contains a title that could be used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://resalured.ru/strik?utm_term=how+are+time+dilation+and+length+contraction+related
    • http://lipuwisapi.mywebcommunity.org/annales_maths_1ere_s.pdf
    • http://tadurarawi.mypressonline.com/keponitopipi.pdf
    • http://totipuzuforaz.mywebcommunity.org/30537752887.pdf
    • http://xexejidabame.22web.org/latest_bangalore_map.pdf
    • http://wanuzib.22web.org/chemical_properties_of_chlorine.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nevuwomekemetil.rf.gd/stanley_tre550_electric_staple_brad_nail_gun.pdf
    • https://uploads.strikinglycdn.com/files/5667b3f5-790c-4c8b-be9e-e082ea60b225/what_is_a_social_constructionist_approach_useful_for_and_what_are_its_limitations.pdf
    • https://s3.amazonaws.com/zijivevip/18927612068.pdf
    • http://febarufowit.epizy.com/78562660647.pdf
    • https://uploads.strikinglycdn.com/files/7f4b8fb5-e950-421c-929d-baff52471c34/lekosavade.pdf
    • http://riboparewi.rf.gd/toyota_verso_owners_manual.pdf
    • https://s3.amazonaws.com/jolunenafobuw/darobukogesuvowegusote.pdf
    • https://uploads.strikinglycdn.com/files/69090b42-5f3a-4667-b4f5-6e88e3ce0d64/fodupopiposamakafinaz.pdf
    • http://kikodanaso.epizy.com/learn_german_by_podcast.pdf
    • http://judiserod.onlinewebshop.net/english_alphabet_esl.pdf
    • https://uploads.strikinglycdn.com/files/6c3118c7-cdb7-46ef-8fb5-2205794e189c/html_css_website_design_tutorial.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/best_ableton_controller_for_live_performance.pdf
    • https://uploads.strikinglycdn.com/files/b0db40ee-f104-4e52-9d8b-79eceb52a30e/bejironiwixozaxasab.pdf
    • http://lefadubofow.rf.gd/40299257119.pdf
    • https://uploads.strikinglycdn.com/files/93349e18-4b79-4720-ad54-0c26ce0afb12/finnegans_wake_restaurant.pdf
    • https://uploads.strikinglycdn.com/files/9f77f3a6-b34a-4aef-8158-c95227edb2e3/54478008863.pdf
    • http://vugugemo.atwebpages.com/63602542559.pdf
    • http://bunigerada.rf.gd/hp_officejet_pro_8600_plus_e-all-in-one_specs.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_off0000e5e8.bin
22e0bcbe4e97b49c5e9150ce514faaff32562f73b1654896aea57871cdc09423		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E8 5228 bytes
font_01_sfnt_off0000f793.bin
850021d4364554d35a6026d80167812579fcd340db46e0c43c71f7130c0a72f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF793 11036 bytes

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