Malicious PDF — malware analysis report

Static analysis result for SHA-256 de269a84eca5eaab…

MALICIOUS

PDF

77.7 KB Created: 2021-03-14 20:15:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 589687a59012b0ee0e44b719fc016bc1 SHA-1: 59d17ecb82605f4caaa0ecbb7c0c71ae293df73e SHA-256: de269a84eca5eaab5d9c146bee7c754141faf1f6dfe1e01d226e587beff7e2ce
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and is flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains keywords related to legal notices, suggesting a phishing or social engineering lure to direct users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/wix?keyword=notice+of+non+renewal+of+lease+california PDF link annotation
    • https://cdn.sqhk.co/vekosozob/iiwUIgg/calendar_october_2020_to_september_2021_printable.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/28365640170.pdfIn PDF document text
    • https://cdn.sqhk.co/suwezuzifu/bBthiic/27704501985.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/gFtMiiL/dinuziwotovawuvalazifunef.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/jhdhe2C/25388717634.pdfIn PDF document text
    • http://topcreditcheck.info/irobot_595_pet_series28so0.pdfIn PDF document text
    • http://xuxodowenam.getenjoyment.net/31002494197.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/Qge6Uig/screen_recorder_ipad_free_download.pdfIn PDF document text
    • http://heliusdesign.ru/microsoft_program_manager_intern_interview_questions6liap.pdfIn PDF document text
    • http://retys.fun/power_pistol_offense_playbook5rv2b.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/78633443700.pdfIn PDF document text
    • http://salleop.xyz/soporotezixad5bp8v.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/195996d6-1a7e-45db-a872-a16884ee06a3/6622431731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a890b4a-3a60-4387-b932-7c599dbecf26/tp_link_wr841n_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e436ad91-a132-41bc-86c7-22eda6ea29e2/tedibopudutiteruzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d71979-ae3f-4a0d-ab76-ad861f11a806/american_history_x_edward_norton_workout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fb7e910-3285-4279-a85b-79efd347301e/fupolozigas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b86c7d8-3b53-49a0-9051-4ccd02d03247/divuxobilamuvasutowilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78ecef5c-6f4d-4bed-b11a-d204bb118eca/dd_book_of_lairs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb91e1db-6477-46ae-bf8d-63f88b5b80df/12629032219.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_off0000f3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B5 4936 bytes
SHA-256: 68e3020569924fd2ec81a02cf9a9962646d1c64fed2eba1d4be2b2d30f7ae0de
font_01_sfnt_off000104a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A5 10848 bytes
SHA-256: 1af12df4a11be962334df364c734a1d81b8046e8909bb9d8a3f119a9383d1191

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