Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17872a90c473e34…

MALICIOUS

PDF

82.7 KB Created: 2021-03-06 06:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 62e0ba7a1a3bd29866b6495a75aad1e0 SHA-1: d1439f628e812969e0e8a393fb6277ccb42f9a1f SHA-256: d17872a90c473e342493162ed8712daebab04e8dffe98b56f57411686f58e14c
96 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with the primary one being a lure for a 'PMP project management professional exam study guide'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious site or download a secondary payload.

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://ponafet.ru/strik?utm_term=pmp+project+management+professional+exam+study+guide+10th+edition+pdf PDF link annotation
    • http://saxobupazes.sportsontheweb.net/how_to_refill_a_boiler_heating_system.pdfIn PDF document text
    • http://apsmall.space/tiger_2020_predictionskwitp.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/can_you_submit_more_than_one_1096.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/how_to_count_to_100_in_spanish_by_tens.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/our_god_reigns_israel_houghton_guitar_chords2g6h0.pdfIn PDF document text
    • http://alluniversity.fun/68335160736md4zq.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/mini_dv_camcorders_for_sale_uk.pdfIn PDF document text
    • http://tesugujinarijag.mywebcommunity.org/literary_devices_practice.pdfIn PDF document text
    • http://rezotu.xyz/careless_whisper_saxophone_sheet_musicn1h27.pdfIn PDF document text
    • http://tujemet.scienceontheweb.net/lord_of_the_rings_2_movie_cast.pdfIn PDF document text
    • http://pedrons.space/lapixagluku6.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
    • https://s3.amazonaws.com/xapidajovaji/flight_simulator_2020_xbox_one_beta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65cbfc09-722c-4aa8-b3d2-6bb491b99448/54035105285.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/proofreading_worksheets_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/repashy_crested_gecko_care_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/mabatujidaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/810e7e53-4e31-4c1c-a2a8-6633fe20faf8/man_of_constant_sorrow_mandolin_chords_and_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/88363672410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eb99ce8-5b04-4ff6-b4d4-cb6abf37bbf3/sony_ps-lx300usb_belt_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea5492d-8094-4bfb-ba24-7bd056f7e71b/losarifedativelowox.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/12735158829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c7fd27-fb27-4a6b-8913-7d06e93f4c9f/14388392601.pdfIn PDF document text
    • http://wuragumok.atwebpages.com/how_to_set_up_amazon_echo_show_2nd_generation.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_off0000f5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C3 5892 bytes
SHA-256: 761ed08147313b4bfa43cf449ec637c4d98d06b674b268862344c19933e20b6c
font_01_sfnt_off000109b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B8 10652 bytes
SHA-256: ef62d75de8b695bb62596de74e886803f65462204286ef02768c8be24b124c0f
font_02_sfnt_off00012def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DEF 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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