Malicious PDF — malware analysis report

Static analysis result for SHA-256 2274fdcae3eda82f…

MALICIOUS

PDF

77.0 KB Created: 2021-03-22 15:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87ee7e3481b9293a04e02543717731c0 SHA-1: 9de6185088db5387460fcfadcf75f741976606fb SHA-256: 2274fdcae3eda82f2c632c7eccc2ac6f1b67f441601b5b281015cd3eae63f8dd
96 Risk Score

Malware Insights

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

The PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'mezovuduw.ru', which is likely used to redirect users to a phishing or malware distribution site. The PDF structure and embedded content suggest it's designed to exploit user trust, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=ninja+ios+instagram
    • https://cdn.sqhk.co/zupuguvawaj/YXW0iiB/xupemi.pdf
    • http://kzrovk.xyz/25591461776dyhfa.pdf
    • http://ladyso.ru/lipufekamakxlq7n.pdf
    • https://cdn.sqhk.co/sotatixorawi/ichjDhf/commuter_bikes_for_sale_ebay.pdf
    • https://cdn.sqhk.co/kawinojos/mCxihjh/marunuwoxuposut.pdf
    • https://cdn.sqhk.co/botuvawezej/9MhajfK/shellac_nails_ideas_2020.pdf
    • http://optamorem.com/depaxiwuresadumeradezo9o6es.pdf
    • http://prolac.ru/fogeluyx667.pdf
    • http://covidcapsule.world/sojofidokosafoxafuku4p7b0.pdf
    • http://rumajasajobotod.iblogger.org/apa_format_reference_research_article.pdf
    • https://cdn.sqhk.co/motuvitewodi/dpQheig/xetutulo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rimejiguvif/cant_get_my_champion_generator_started.pdf
    • http://zikituxepori.epizy.com/38427931579.pdf
    • http://bajaxugezozego.rf.gd/7590714950.pdf
    • http://zozoresupiz.epizy.com/30388042937.pdf
    • http://dejamatokato.rf.gd/big_o_notation_examples.pdf
    • https://s3.amazonaws.com/bokelur/slave_contract_means.pdf
    • https://s3.amazonaws.com/gixawetopoli/games_apkpure_offline.pdf
    • http://pogokarafu.epizy.com/computer_information_systems_analyst_job_description.pdf
    • http://susarapobat.rf.gd/invicta_watches_review.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_off0000f030.bin
80accf27fafc316b4d6995ce35ee2a72351721cbc7c9788ce0f365a8dc5ba2ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF030 5020 bytes
font_01_sfnt_off00010137.bin
1ebfba7e347f52a37bebb21b6119a72bd538d7725de2c8b5e4d9088b5ead3a15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10137 11092 bytes

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