Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9816e2e7c6ac542…

MALICIOUS

PDF

65.4 KB Created: 2021-03-19 07:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ffb1d40a1f8be1a50e4d82c4d39e9f0a SHA-1: 37a4e8dce5e35e7e963f8b6501f8e833ae8b420a SHA-256: f9816e2e7c6ac5422d49e85c195f487437c9a881d907b38f49b66329ef8be014
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm or SEO spam campaign. The ClamAV detection and ML classifier indicate malicious intent, likely to redirect users to phishing sites or download further malware. No scripts were extracted, but the PDF structure itself is used to host and distribute these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9263

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://jacksth.ru/award?keyword=affixation+definition+pdf PDF link annotation
    • https://gebusoju.weebly.com/uploads/1/3/0/9/130969184/8348430.pdfIn PDF document text
    • https://tigoxugijiwubaz.weebly.com/uploads/1/3/4/3/134315710/regemivunaxobufuxu.pdfIn PDF document text
    • https://jitivafume.weebly.com/uploads/1/3/0/9/130969372/zidalikav-bekodi-feretilijukef-zamegamod.pdfIn PDF document text
    • https://cdn.sqhk.co/gogerazina/eb8Eggn/my_mobile_radar_app.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/mA1ihge/southwold_maize_maze_discount_code.pdfIn PDF document text
    • http://subaxidubuju.22web.org/lugewesojoza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446635/normal_6052e8c62af69.pdfIn PDF document text
    • https://cdn.sqhk.co/niwuruba/qdhehbI/crown_poster_template.pdfIn PDF document text
    • https://ditakusoboke.weebly.com/uploads/1/3/1/4/131437623/sojuge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484364/normal_601067fcb1ac2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376870/normal_5ff21cb858c7a.pdfIn PDF document text
    • http://suniwenejuwodel.iblogger.org/mega_book_of_modern_english_grammar_free_download.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/8d9f47ba-0ec6-4533-b4d3-a3e7efcbc962/joe_defranco_training_economy.pdfIn PDF document text
    • https://3568c1c9-c281-4b9a-9ea9-d5d291e0176b.filesusr.com/ugd/e5d8db_7c59eb9245da4a158a63cbecd41179bc.pdf?index=trueIn PDF document text
    • http://raxusitusumulag.rf.gd/axis_camera_station_client.pdfIn PDF document text
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_e3efa87e8fff4814a65de021c8c98679.pdf?index=trueIn PDF document text
    • http://difugarulid.epizy.com/uefa_champions_league_2006_pc_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba171d33-e487-4080-986a-0c8e9041f4c7/84685187590.pdfIn PDF document text
    • http://zekipiwozuse.epizy.com/how_to_set_heat_on_fujitsu_air_conditioner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7983a88-0358-4fd4-a65e-0ab6d9fd6669/91661289688.pdfIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_f94ebdf78df8487385666f95ccc8f0d1.pdf?index=trueIn PDF document text
    • https://2ddc7431-ff91-46e9-9708-195efd6cc195.filesusr.com/ugd/ffe0d3_1689c4cebcd74d8f95f1d8e3974f509f.pdf?index=trueIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_5c70d5864a3545e79e29123a3db6a581.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce4eab83-73fe-4fa5-b4eb-56631280d0b3/mawawe.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CE 4784 bytes
SHA-256: b0b738e5ed33efa887433a8bbc75601f08911ab5479198231aa43b31c8431f9b

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