Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b62cb68cdd3db00…

MALICIOUS

PDF

78.2 KB Created: 2021-05-01 14:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ae229d0242fff27a035c5c2a7dca28d7 SHA-1: 709b97deb8f2ba0cc19c1a0bf5155ad5a1ad3611 SHA-256: 2b62cb68cdd3db00665b6131d0fe4b4c3ee135c6e56967670c1e6535408ee493
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, with a primary suspicious URL pointing to 'mezovuduw.ru', suggesting it functions as a lure for phishing or malware distribution. The PDF's structure and embedded links align with tactics used to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=panasonic+plasma+tv+remote+control PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454543/normal_60598665c8b97.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/gheQjhF/57466448580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482617/normal_605645d78ea40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448550/normal_6018a2fd1559a.pdfIn PDF document text
    • http://p-kavkaza.ru/sorusojexotevaxevagka455.pdfIn PDF document text
    • http://stopnutristrike.ru/848563909792k62n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457005/normal_60249dd7d8c25.pdfIn PDF document text
    • http://tebogekememesij.mygamesonline.org/collapse_of_the_republic_fantasy_flight.pdfIn PDF document text
    • http://ufenmac.com/translate_english_name_to_chinese_language32r7h.pdfIn PDF document text
    • https://cdn.sqhk.co/xujurovemu/b79ybif/94456708271.pdfIn PDF document text
    • https://cdn.sqhk.co/suvotoruwot/iQiaPqz/green_new_deal_proposal_taxes.pdfIn PDF document text
    • http://kolekewoni.mywebcommunity.org/rectangular_coordinate_system_examples_with_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_6022c43347c4d.pdfIn PDF document text
    • http://openplafond.xyz/binabexiwakaxozesozizajekuvgrw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_603831efee24d.pdfIn PDF document text
    • https://cdn.sqhk.co/dakuwuwuzije/gftGMOM/kiretunofagemaxebaseb.pdfIn PDF document text
    • http://afracheat5.xyz/22177373210dsnsy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483082/normal_6038e1fa29c4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/87673361315.pdfIn PDF document text
    • http://suzifoki.myartsonline.com/mebakufixuseriraregani.pdfIn PDF document text
    • http://dubanexotokegel.myartsonline.com/xajegapuzupusikopewag.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/free_whatsapp_latest_version_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/naming_ionic_compounds_that_have_polyatomic_ions_worksheet_answers.pdfIn PDF document text
    • http://pogetowem.onlinewebshop.net/noxeg.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/bazeferapa.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/golufapenederalaluxux.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BA 5140 bytes
SHA-256: 4ebfa234424c54019d66f12a49d7d68ec7738e5b8d6cb5e859204d9f3c1775ff
font_01_sfnt_off00010429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10429 11672 bytes
SHA-256: 8adc4e707c8537531afaa530bc7cebf8a0a2b6bab938273ed187db98ee629f54

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