Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c09f1b720bf9fc…

MALICIOUS

PDF

68.9 KB Created: 2021-03-23 04:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e5440839b2b97c88a0e10d138d223b61 SHA-1: 8c01c4c64b31d83b60e90e3ae471fb97481efbeb SHA-256: e0c09f1b720bf9fcd62a8558013389da7af5ca9e390c277ebb494e14d2f84d5d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/award?keyword=burger+king+gutscheine+pdf+mydealz PDF link annotation
    • http://alisabor.design/falapevisosolevoluboginu0cii.pdfIn PDF document text
    • http://vulgargirls.fun/mowivugo3klz1.pdfIn PDF document text
    • http://goossyy.online/mf_35_deluxe_dieseltf6f6.pdfIn PDF document text
    • http://goodsfor.life/dilabumipugomuwebigiroxogc2zxx.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/45489750322.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/hhjdhid/43068504625.pdfIn PDF document text
    • http://insuranceautousa.com/how_to_use_walgreens_infrared_instant_ear_digital_thermometerdod26.pdfIn PDF document text
    • http://zoxuruje.sportsontheweb.net/37601540347.pdfIn PDF document text
    • https://cdn.sqhk.co/kavuzoda/jijhjhg/dream_football_champions_league_soccer_games_2020_hack.pdfIn PDF document text
    • http://airned.ru/how_to_solve_kinetic_and_potential_energy_problemsvs3qp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_5af89a90696a47968464f62e82e7ad26.pdf?index=trueIn PDF document text
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_6a0ff764839545c38cada1236986eca1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee3bfc41-e8bc-441a-b6fd-616a77f03423/muzuwurajuxaguxojugikovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c912ee4e-0480-494b-aec4-022863d80301/sig_sauer_p320_vs_glock_19_en_espaol.pdfIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/castle_used_in_robin_hood_2010.pdfIn PDF document text
    • http://jemukiguwuw.myartsonline.com/womunifew.pdfIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/xesefasizabotujuto.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_off0000cbdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDB 5836 bytes
SHA-256: 9dd0c8bf7cde3fd73a8470e6f8d6fa1442df766363e84a46a6ba8248338be7a4
font_01_sfnt_off0000dfae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAE 11284 bytes
SHA-256: bddc968334d7983d21b8c0ffe1ea64fecbdf986289b0c145d4f95da3379f348b

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