Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccaacd809934b243…

MALICIOUS

PDF

77.8 KB Created: 2021-03-18 23:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23f279eac87f74c7d75026163e2e37a5 SHA-1: 405b7ce3009e8c5bb92e2d57e6418f70709b990c SHA-256: ccaacd809934b24355a8784002e557dd09ee3547ba5e02a64e19cab9d0003259
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'mezovuduw.ru' suggests a phishing or credential harvesting attempt, disguised as a study guide. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into downloading further malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/award?keyword=attributes+of+god+study+guide+pdf
    • https://cdn.sqhk.co/veladaxuzeba/pgeo3gi/elvis_presley_the_live_greatest_hits_cd.pdf
    • http://nesebonuvobeju.getenjoyment.net/zisefutusajarife.pdf
    • http://dunodipike.sportsontheweb.net/age_of_sigmar_core_rules_faq.pdf
    • http://kufigada.22web.org/catalysis_file.pdf
    • http://jukejed.mypressonline.com/xeperu.pdf
    • https://cdn.sqhk.co/kupawusel/fhahahg/25630490644.pdf
    • http://tuboleso.22web.org/famokaduzidazore.pdf
    • http://bimoriz.getenjoyment.net/ejercicios_de_estadistica_para_3_primaria.pdf
    • https://cdn.sqhk.co/kakolutezegu/iffzw6M/cabbage_diet_plan.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/db6a34d9-ce07-415a-82e1-67104719b922/bible_quote_with_god_all_things_are_possible.pdf
    • https://uploads.strikinglycdn.com/files/d0247b16-6fc3-4ce2-b3ba-0f758916ab52/xbox_live_gold_card_code_scratched_off.pdf
    • http://senapofo.epizy.com/13885264642.pdf
    • http://rugizasuvodaw.rf.gd/46896446206.pdf
    • https://uploads.strikinglycdn.com/files/4844815a-87c7-44cd-8c94-0b6d7fad63a3/que_es_enseanza_segun_autores.pdf
    • http://vuzuwukef.atwebpages.com/chief_eval_midterm_bullets.pdf
    • http://nizowozutagele.atwebpages.com/ludozidobidunamokefuv.pdf
    • https://uploads.strikinglycdn.com/files/e3fea1d3-a5dd-4203-a7b4-30708cef91fc/how_to_treat_eczema_through_diet.pdf
    • https://uploads.strikinglycdn.com/files/796af06f-2364-4e78-b02e-107c7be1bf88/jeziperemigo.pdf
    • http://runuwug.myartsonline.com/can_i_get_hbo_max_through_apple_tv.pdf
    • http://jibimom.myartsonline.com/how_does_an_international_letter_of_credit_work.pdf
    • http://nisetekotixob.myartsonline.com/camp_david_accords.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_off0000f13e.bin
402c5931f9fc100777cfd3378dfa0cc2840d9e8c2cd67ab8622c9a2312a3258c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF13E 5200 bytes
font_01_sfnt_off00010305.bin
ad9f270935ffff92fd7f0d5f09edfcde1a6a03493d54879bd21071fe527122e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10305 10892 bytes

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