Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9ae084af679a40…

MALICIOUS

PDF

80.2 KB Created: 2021-03-18 09:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4b420991ba86d020031ca27fbe1394e SHA-1: d4a90e16ae59fc50a31c6a696ff96c2486f55756 SHA-256: bc9ae084af679a40e4125b443e6711c664f89066bd6970c124a950c9e8b352c6
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to syncing a Serta adjustable bed remote, directing users to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jacksth.ru/strik?utm_term=how+do+you+sync+a+serta+adjustable+bed+remote
    • http://netlysy.online/36395475275eqqvb.pdf
    • http://wanezus.scienceontheweb.net/jugemotususomop.pdf
    • https://cdn.sqhk.co/jokalirubore/bggivij/battles_of_the_american_civil_war_1863.pdf
    • http://goligofalu.medianewsonline.com/wusanelejidozetujapepufo.pdf
    • https://cdn.sqhk.co/gapekozuwa/Bjfiigh/jixonobud.pdf
    • http://zodatowafe.getenjoyment.net/lg_bluetooth_headphones_aptx.pdf
    • http://raicen.com/star_wars_4_streaming13oah.pdf
    • http://xapiduxirob.mywebcommunity.org/fogaxowumim.pdf
    • https://cdn.sqhk.co/berovanova/7iggdOL/one_way_anova_examples_with_solutions.pdf
    • http://50off.pro/metodo_de_transporte_costo_minimo_on2n03q.pdf
    • http://tuwavetatifida.iblogger.org/capillarity_fluid_mechanics.pdf
    • http://hargotel.xyz/what_are_themes_in_huckleberry_finnpvnh8.pdf
    • https://cdn.sqhk.co/sajixobuko/eeaEijX/74238096501.pdf
    • http://jefozogez.66ghz.com/47241223080.pdf
    • https://cdn.sqhk.co/dibirolinu/hhjblhb/ultimate_ocean_simulator_download.pdf
    • http://kavademive.sportsontheweb.net/65119721124.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/d0c0d257-39ec-4e49-a176-b12971c36ca2/72156388996.pdf
    • https://uploads.strikinglycdn.com/files/bbf7e951-157b-4b31-a2d2-8e559dd6c6fc/4560030447.pdf
    • https://uploads.strikinglycdn.com/files/52d0922f-be46-4fe6-ae28-2512a9de0ed2/bawuligosopobozed.pdf
    • http://zomumadunita.rf.gd/penetration_testing_services_procurement_guide_v1._0.pdf
    • http://zesugipove.onlinewebshop.net/arc_mate_120ic.pdf
    • https://uploads.strikinglycdn.com/files/a5a93125-25f9-4c71-833f-24255929ebb2/death_note_characters_l_name.pdf
    • http://sinusudixuxuwad.atwebpages.com/time_value_of_money_problem_and_solution.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee4b.bin
565e0cd7edb06c0d3b32a438077b0c12f8ca059d2c173ad2fe01f7b5c1efc663		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4B 5288 bytes
font_01_sfnt_off00010046.bin
94a112f31f8339b687a7871b6d2db48f9c60964ec22ef371e52d5c0802c43145		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10046 10788 bytes
font_02_sfnt_off000124eb.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124EB 4324 bytes

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