Malicious PDF — malware analysis report

Static analysis result for SHA-256 8017b799fa689f6a…

MALICIOUS

PDF

87.3 KB Created: 2021-04-03 07:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50efe964415d1cf0cc0e3ee88bb8fe42 SHA-1: efb1ddaae648f5a3840dfee1f460ffd564051600 SHA-256: 8017b799fa689f6a3d86db937644487c1885e0364ec53d54d72b96cde52a12a3
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URI pointing to 'resalured.ru', which is likely a phishing or malware distribution domain. The presence of this external URI suggests the document is designed to redirect users to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/award?keyword=beauvoir+ethics+of+ambiguity+pdf
    • https://cdn.sqhk.co/wajidafix/C6ahdjd/12606926943.pdf
    • https://cdn-cms.f-static.net/uploads/4366047/normal_604bb320a732e.pdf
    • https://cdn.sqhk.co/xevowuto/UJjdc64/download_game_survival_heroes_moba_battle_royale.pdf
    • http://fajiriduxir.medianewsonline.com/resalavep.pdf
    • https://static.s123-cdn-static.com/uploads/4454042/normal_5fe39d8d3f53f.pdf
    • https://cdn-cms.f-static.net/uploads/4468294/normal_603349c39b709.pdf
    • http://rozujed.sportsontheweb.net/66836145072.pdf
    • http://rejemezurufoveg.mywebcommunity.org/wideralogen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wipotegadodorek/real_estate_finance_and_investments_14th_edition_solutions.pdf
    • https://s3.amazonaws.com/bogeguva/interview_questions_and_answers_for_sales_agent.pdf
    • https://s3.amazonaws.com/topipovikapari/40715863897.pdf
    • https://uploads.strikinglycdn.com/files/71bcda2b-87cd-41d6-9116-16822688fd1a/plantronics_backbeat_go_810_app.pdf
    • https://s3.amazonaws.com/legobegutulo/how_to_go_to_mount_fuji_fifth_station.pdf
    • https://s3.amazonaws.com/muvemasoxaji/admission_form_uos_2019.pdf
    • https://s3.amazonaws.com/benubapopikaj/6116769710.pdf
    • https://s3.amazonaws.com/xamapebonijos/airplane_3_view_line_drawings.pdf
    • http://xasejumav.onlinewebshop.net/jesus_holy_and_anointed_one_chords.pdf
    • https://s3.amazonaws.com/makixibawumebol/duraflame_infrared_quartz_heater_troubleshooting.pdf
    • https://uploads.strikinglycdn.com/files/39e66ba6-c038-4c61-a0f8-dbb69553adb6/jonufagibipitemexesixer.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_off000114ed.bin
bb92a87157418dd75ddbfb018823ae0f31315ccebb2e262dd5d691f8c7b35998
pdf-font-stream PDF embedded font (sfnt) at offset 0x114ED 5888 bytes
font_01_sfnt_off000128e1.bin
bf7dcab5236b3a0db9f978f56e7becfdde36a29663e3f212e180dcbb77eddff6
pdf-font-stream PDF embedded font (sfnt) at offset 0x128E1 11528 bytes