Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b563405ebf4ad39…

MALICIOUS

PDF

80.0 KB Created: 2021-03-01 02:44:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: f5bd980f60eecf23719f1c40d9ee5069 SHA-1: dbbbaf19bfd7d1bd9dd3e1ba53c0e316a7177bef SHA-256: 5b563405ebf4ad392110c09bc84b5ced1cc88559a6e73a25f24fd69d022a518c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'dugedepap.ru', which is likely a phishing or malware distribution domain. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, consistent with spearphishing tactics.

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://dugedepap.ru/strik?utm_term=how+much+is+justin+timberlake+worth PDF link annotation
    • http://fawikenaxalu.scienceontheweb.net/unlock_ipod_nano_3rd_gen.pdfIn PDF document text
    • https://cdn.sqhk.co/ziveluki/Mjdbwq3/flight_simulator_2020_controls_xbox_controller.pdfIn PDF document text
    • http://manovina.mypressonline.com/junulomizomusebisusikug.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/what_is_nikes_strategy.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/94423946866.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/fefurorobumi/13534981509.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/mikuni_carb_rebuild_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/21542556090.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/dedaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/jejagope.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/54938892932.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/26828928541.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/unfamiliar_words_using_context_clues_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/56689558164.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/concept_of_break_even_point.pdfIn PDF document text
    • http://tewewib.rf.gd/what_does_the_boy_in_the_striped_pajamas_symbolize.pdfIn PDF document text
    • http://lunujebof.rf.gd/australian_first_edition_harry_potter_books.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/caitlyn_guide_mobafire.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/fusion_gratuit_telecharger.pdfIn PDF document text
    • http://litorow.myartsonline.com/riguxuwa.pdfIn PDF document text
    • http://gezewezelatemak.epizy.com/97464397262.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_off0000fba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA6 5372 bytes
SHA-256: 72728ecc66ab4f78ce1a7a321bf57160f7600d5b264420cc4bb9c7708d19bac4
font_01_sfnt_off00010dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD0 10652 bytes
SHA-256: 4e15912a79c4e9468412cb755e9b13ac1c5e739ecaf82139c2be2075de951645

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