Malicious PDF — malware analysis report

Static analysis result for SHA-256 f84a2e82b556ebaf…

MALICIOUS

PDF

75.0 KB Created: 2021-03-20 23:20:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5cd817dcd5c2adb4b4e0b3cb64d9ad38 SHA-1: 26b11ab46cb85ea918d4950fbb2f905c520b4135 SHA-256: f84a2e82b556ebaf9f7e23e50541b84cb0d47785d45eb7fc257cdc6d9396a41d
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary suspicious URL pointing to a domain known for malicious activity. The document body, though heavily obfuscated, appears to be a lure related to a popular movie, likely intended to trick users into clicking the malicious link. No scripts were extracted, but the presence of multiple external links suggests an attempt to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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=is+the+boy+in+the+striped+pajamas+on+netflix+uk+2020 PDF link annotation
    • https://kofaxikizija.weebly.com/uploads/1/3/4/3/134336932/kufawakupon-meradekegomid.pdfIn PDF document text
    • http://crysety.xyz/canon_sx510_hs_user_guidea2cv7.pdfIn PDF document text
    • https://bopojebokup.weebly.com/uploads/1/3/1/4/131408204/e825a.pdfIn PDF document text
    • https://cdn.sqhk.co/lamimegisu/mjj5lTN/tip_report_2019_bangladesh.pdfIn PDF document text
    • https://warodimaziwini.weebly.com/uploads/1/3/4/6/134611971/vosulini.pdfIn PDF document text
    • https://cdn.sqhk.co/madozozafi/VCidrhg/ziwenapuzimodipofe.pdfIn PDF document text
    • http://grigolia-studio.ru/2017_rzr_1000_service_kitgc8l3.pdfIn PDF document text
    • http://topshops.website/kefututede27rs.pdfIn PDF document text
    • https://cdn.sqhk.co/wukufazujuv/HshiU98/rususalabalumafun.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/djbjbii/zombie_tsunami_apk_hack_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://ruredat.rf.gd/data_fix_apk.pdfIn PDF document text
    • http://tubaduk.epizy.com/90818238786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ae617a2-61dd-4767-ba5f-71cb3884a88c/como_hacer_una_minuta_de_reunion_ejemplo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73404220-fbfd-4526-a3ce-5e9a0bb45619/how_to_set_tax_rate_on_casio_ms-8tv.pdfIn PDF document text
    • http://nekaxikafixof.epizy.com/nuzoxim.pdfIn PDF document text
    • http://kifemulawej.epizy.com/chain_reaction_tamil_dubbed_movie.pdfIn PDF document text
    • http://lofoxos.epizy.com/xesepegevuxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e23da5b6-ba8c-46f3-8c2b-643c6538bbd3/pedatizanufalido.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD617 5824 bytes
SHA-256: 34879beb26f26ec8a9bcfc015857d09b9aa3df126089d434869189d6e96baa7e
font_01_sfnt_off0000e9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AE 11324 bytes
SHA-256: 79e298b5064fe24b738b8c2ca607506dc0eeb7b260ff44d58cc5681f22fd59ec
font_02_sfnt_off00011082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11082 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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