Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce5b9bfa7906938…

MALICIOUS

PDF

77.9 KB Created: 2021-02-26 16:10:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ed8e576ec22310a7a51773958640b775 SHA-1: 16596b33b609a07ae8fa8f25628873f29b2edac0 SHA-256: fce5b9bfa790693825da52efbc62b4a9d625903875e523655e2b7c65e649d54a
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to disposable hosting services or suspicious domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains metadata related to 'cookie mining lab analysis questions answers', likely a lure to entice users to click on the embedded links.

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://botokaw.ru/wix?keyword=cookie+mining+lab+analysis+questions+answers PDF link annotation
    • https://cdn.sqhk.co/fizuborugas/kkFxKia/83616311923.pdfIn PDF document text
    • https://mujilaku.weebly.com/uploads/1/3/4/3/134389228/puveweromunak-xidumunegagunin-wivupetasabad-pizezuw.pdfIn PDF document text
    • https://sadavofabuloxus.weebly.com/uploads/1/3/5/3/135316226/pesojofa.pdfIn PDF document text
    • https://cdn.sqhk.co/metajewamiva/haYjaji/tekudutisosudiwegoxitevil.pdfIn PDF document text
    • http://paganel.world/el_reino_de_este_mundo0pl4a.pdfIn PDF document text
    • http://ig-socialmedia.xyz/66206390505wbs80.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/organic_chemistry_volume_2.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/aswb_practice_exam.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwebuvowo/0bibFhj/zombie-_online_app_zombies_attack_game.pdfIn PDF document text
    • http://prazdnikprosto.ru/balapam_patti_telugu_songmelh8.pdfIn PDF document text
    • http://bawazofo.getenjoyment.net/segojibex.pdfIn PDF document text
    • http://rajukilodagoje.mygamesonline.org/35379923275.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/how_to_draw_books_for_9_year_olds.pdfIn PDF document text
    • https://xokefazekuli.weebly.com/uploads/1/3/5/9/135992394/boduxawu.pdfIn PDF document text
    • https://cdn.sqhk.co/birugafomafo/shbkgcy/16181871431.pdfIn PDF document text
    • http://pollsexpert.com/dapodisumakogudekexorar7zb0s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sogivuwe.onlinewebshop.net/do_gamestop_repair_consoles.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_off0000f395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF395 5436 bytes
SHA-256: 745fd2d105895de80390ed5abf78d7598bfc5a9e59a41fd73b6750b727437029
font_01_sfnt_off00010611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10611 10672 bytes
SHA-256: 87af9a070e97c82aca6d9cbdc48b62963b73d4c289461945db1e2d4f78903c50

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