Malicious PDF — malware analysis report

Static analysis result for SHA-256 29295cd043056b3c…

MALICIOUS

PDF

77.7 KB Created: 2021-04-15 00:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6f3572db6e833284febb5cdcabee1610 SHA-1: e812dc3202a60b369385215e7b2abd96cd7ec4bd SHA-256: 29295cd043056b3c3f2c1f1cc5943a7f8dbb98e96b4751ab4edc27b08975e4e0
66 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable hosting, and is flagged as a link farm. The primary URL, 'https://soxebez.ru/strik?utm_term=fallout+3+game+of+the+year+collector%2527s+edition+prima+official+game+guide', suggests a lure related to a game guide to entice users to click. While no scripts were explicitly extracted, the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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://soxebez.ru/strik?utm_term=fallout+3+game+of+the+year+collector%2527s+edition+prima+official+game+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444098/normal_60636722253ac.pdfIn PDF document text
    • http://bometaximom.scienceontheweb.net/lovezamebalerudixu.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/Tehdpia/86396878741.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375204/normal_606b06736a36b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374835/normal_6043092a0e3d6.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/landscape_architecture_books.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502567/normal_601047a339de6.pdfIn PDF document text
    • http://vykupavto54.ru/facilities_management_budget_templates9ph0.pdfIn PDF document text
    • http://theplafond.xyz/how_to_send_garageband_project_from_mac_to_ipadfg4j3.pdfIn PDF document text
    • http://sirunome.mypressonline.com/curriculum_vitae_example.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/ciciDRi/top_1000_songs_of_the_90s_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450139/normal_5fd1fe882f71c.pdfIn PDF document text
    • http://goxivomibivufuv.mywebcommunity.org/72253344448.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/tizufug.pdfIn PDF document text
    • https://cdn.sqhk.co/kanemili/bgcIhgn/real_racing_3_apk_obb_revdl.pdfIn PDF document text
    • http://siankaanmexico.com/peluditoxipembv79e.pdfIn PDF document text
    • http://harmony-market.ru/why_is_my_panasonic_cordless_phone_cracklingbsb48.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/vukusa/zemaduxalewuvekarepug.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/blasted_sarah_kane_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/808552560.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66F 5704 bytes
SHA-256: 691b3b69b671ae754b18a0423a61dad276d03b2ccc5ccdf9f2a5e9c5b8ee4ef4
font_01_sfnt_off0000e9bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BB 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000f248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF248 11000 bytes
SHA-256: f083ae5eedd776a73278141f04abcdded53a8572577bb8b96a059b961fa3dfba
font_03_sfnt_off000117cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117CB 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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