Malicious PDF — malware analysis report

Static analysis result for SHA-256 95118c09292d04d4…

MALICIOUS

PDF

83.4 KB Created: 2021-04-01 13:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b4c7613a863d81308a432162e23e3061 SHA-1: 721dd3927aed0ea96fc568e34c94dcd4d7fa59fb SHA-256: 95118c09292d04d49957aa7ad6cda8fca188d574f2020b14b494a0c7a18617ea
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 0.9995

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://dafemum.ru/wix?keyword=azur+lane+guide PDF link annotation
    • https://cdn.sqhk.co/fezusife/g9jfHhf/4947634503.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/lRge1jf/gartner_magic_quadrant_siem_2015.pdfIn PDF document text
    • http://paganel.world/53785391803jfdwm.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/gGjhiiT/67580898272.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/Bhggiji/world_market_promo_code_oct_2020.pdfIn PDF document text
    • http://rumepado.mypressonline.com/zoniwipebilazeduxixilisi.pdfIn PDF document text
    • http://zifixoribe.scienceontheweb.net/27140120402.pdfIn PDF document text
    • http://copyrightnotices-form.com/472812295040ihrp.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/sitsha3/fozorumofujibafogopojeli.pdfIn PDF document text
    • https://cdn.sqhk.co/dutudovajud/cIjbhiK/xigamumi.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/dQKGAfS/pigasiwujenilowojoroloz.pdfIn PDF document text
    • http://gloslides.com/kagifuferef6np2w.pdfIn PDF document text
    • http://best-ital.fun/reasons_my_dryer_wont_heatdajen.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/48201874087.pdfIn PDF document text
    • http://zobabikox.medianewsonline.com/beyond_good_and_evil_kaufmann_translation.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/hp_photosmart_6510_printhead_alignment_failed.pdfIn PDF document text
    • http://rabota-plus.club/kenmore_ultra_fabric_care_80_series_washer_capacitymp2cr.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/33a3927a-0b99-44d0-9135-7d00a0fb87a0/the_witcher_books_the_last_wish.pdfIn PDF document text
    • http://rodexiguv.onlinewebshop.net/the_lion_king_full_movie_google_drive_english.pdfIn PDF document text
    • http://zijedan.atwebpages.com/el_poema_de_atrahasis.pdfIn PDF document text
    • http://lowelomavojezi.myartsonline.com/64622681108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a69e52e-66e1-43b1-9b99-2083f96d8851/awmi.net_a_better_way_to_pray_free_book.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B78 4856 bytes
SHA-256: c6de3c0f40363c3fc3770f36a5a2aea592362cca971ceca5ebc10a0b6ca08060
font_01_sfnt_off00011c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C0E 10584 bytes
SHA-256: 5e5b8074ca9bcc3c5498bd5dc71f8901bb2b83849454037ad2158dc412c8030f

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