Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e6d7bf6284e9c7…

MALICIOUS

PDF

86.1 KB Created: 2021-05-23 22:21:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7511c286e609bd11891a26adb85d9110 SHA-1: a59d73cab39ec4d361b07be7989ca5a0b936de24 SHA-256: 95e6d7bf6284e9c7986ac8189c846b5a79ab0d90005949956b471f5382295ca8
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL. The ClamAV detection and ML classifier strongly indicate maliciousness. The embedded URL, https://golowaki.ru/strik?utm_term=grille+salaire+convention+66+educateur+sp%25C3%25A9cialis%25C3%25A9+2021, is likely used to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=grille+salaire+convention+66+educateur+sp%25C3%25A9cialis%25C3%25A9+2021 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403143/normal_602d87e5badb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487200/normal_5fc5b185bfab9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403806/normal_603e692c0a1fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388065/normal_5ff7d59195991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473916/normal_6056ceb92b93f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/46626e09-311c-4380-8f79-d041665994f4/nijomig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2e70541-3981-44a1-88fa-d02d604b2bf0/rilegedilevaxodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/739e4e43-0b8b-495c-adfa-5f812d16623f/kuxelaxuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bee33878-d51a-4f5d-a1d1-3731f017eda1/inkscape_svg_tutorial_for_cricut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcb65450-dc9a-41be-b501-f8ccbea9064d/stihl_edger_attachment_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e15be84-9a78-4e95-ad1e-be8c8e870b6a/air_force_one_pixel_gold_chain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07e7653a-aaf6-4f62-948d-3f8f168bc83e/vowewudagisidigikukig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89655210-0f24-4ba2-bc82-f9492ed23610/how_long_do_i_cook_country_style_ribs_in_a_pressure_cooker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af1e2a69-9433-433b-840a-8b6899da4eab/1970727363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f72ce3-c6c3-4153-af84-372de99d11fa/dealing_with_emotionally_abusive_mother.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9957ca88-15b6-4719-8001-ec6630c8dd49/78087536734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/747d7f88-2d1e-42a1-9de5-e829eb5328a8/87449773022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d617f7-4d44-48d8-ac72-0228b075caac/cisco_router_e4200_default_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b87835-3f88-4ce2-abc6-0985ae1eebb3/i_can_feel_the_left_side_of_my_brain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fc35201-e1a8-4936-9c8b-91db770a452d/razigejuluwupadufud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1050f99f-428b-47ce-bca5-1bc3b5b1f033/canon_pixma_mx922_driver_for_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e8ee2da-2cb4-424d-973e-5f469625e0c6/nowuxejobepep.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_off0001097d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1097D 5780 bytes
SHA-256: 4d06cb3611054ad3e3ae933860610f5a224fefb71e04a09ef03ea5fb7b694206
font_01_sfnt_off00011d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D03 13648 bytes
SHA-256: 6e537deda1bdea8521811449c2c1338e54ffdba61126463c8c0f4fa44da3c528