Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceb2b54aa6682887…

MALICIOUS

PDF

76.2 KB Created: 2021-03-14 21:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f730ace2a0867a5d6c47130bd5285a73 SHA-1: 73d5139f3d06ffb489f6e848f3d6682135e8ef28 SHA-256: ceb2b54aa6682887d2248efe8ce40ed2f4625c2a4af246b40df02476c330db85
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. Heuristics indicate it uses an invoice lure and contains embedded URLs. One of the primary URLs, 'https://dugedepap.ru/wix?keyword=how+to+send+invoice+on+ebay+before+purchase', suggests a phishing attempt related to e-commerce transactions. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=how+to+send+invoice+on+ebay+before+purchase
    • https://cdn.sqhk.co/nogorodizet/g4kJ2S7/jasper_reports_freeware.pdf
    • https://cdn.sqhk.co/defisepeniba/uhhjeih/2021_forest_river_arctic_wolf_287bh.pdf
    • https://cdn.sqhk.co/vefemenivu/gghoifZ/the_girl_in_the_window_film.pdf
    • http://fakurivevid.scienceontheweb.net/mesawipusopuku.pdf
    • https://cdn.sqhk.co/bitomasijelo/dgiI0ja/paw_patrol_pups_to_the_rescue_download_apk.pdf
    • http://muxoman.mygamesonline.org/71348405021.pdf
    • https://xazowivuxef.weebly.com/uploads/1/3/4/5/134513065/tetezedugu-maxegetisepaw.pdf
    • https://pomisefinare.weebly.com/uploads/1/3/4/9/134902228/7288393.pdf
    • https://cdn.sqhk.co/nodujugebi/bghaCja/merge_shape_option_in_ppt_2010.pdf
    • https://cdn.sqhk.co/veludewozen/jhihhf0/92901215280.pdf
    • http://xasowokudat.medianewsonline.com/73109394672.pdf
    • https://cdn.sqhk.co/tewisifupib/7iiighj/27764973117.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nisoxow/alone_in_the_dark_wii.pdf
    • https://uploads.strikinglycdn.com/files/646ab6b8-7f39-43bd-9109-a9db73dbdd44/honeywell_rth9585wf_installation_without_c_wire.pdf
    • https://uploads.strikinglycdn.com/files/33954aab-4ae1-4fa6-9982-9a38e089c7b4/is_3950x_worth_it_over_3900x.pdf
    • https://s3.amazonaws.com/simujix/tofawen.pdf
    • https://uploads.strikinglycdn.com/files/442d2eac-a491-4048-b187-d8b6941f7e98/how_to_fix_a_weight_watchers_scale.pdf
    • http://keregimuw.onlinewebshop.net/on_my_way_guitar_tab.pdf
    • https://uploads.strikinglycdn.com/files/34461891-0249-476e-9a52-1e3351ec4491/molecular_biology_of_the_cell_the_problems_book_sixth_edition_answers.pdf
    • https://s3.amazonaws.com/genijusemu/malistaire_dungeon_guide.pdf
    • https://uploads.strikinglycdn.com/files/4774c13c-e795-494b-b7ac-1a2b115ffbf1/89021901678.pdf
    • https://s3.amazonaws.com/zevutebulaworel/starbucks_employee_training_manual.pdf
    • https://s3.amazonaws.com/wajibile/75069023838.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_off0000ebea.bin
db31ee8887ee252e83312e84cd08965a5a90c4dcddaf3cb59a6129587029e3ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEA 5568 bytes
font_01_sfnt_off0000feeb.bin
7b1b8a5af6e300045de0086dfafa2a7749258ff396091165e3b5897a723d7526		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEB 10604 bytes

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