Malicious PDF — malware analysis report

Static analysis result for SHA-256 c922286740c0c669…

MALICIOUS

PDF

71.2 KB Created: 2021-04-02 12:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 82752dc33c24df0a892bc8b5a6bba97f SHA-1: fba4c6d6d2dc54ef02d963b0307c32b9dde7d707 SHA-256: c922286740c0c6691ba2eeb5f6245f2e9f1972d4883a19da25962432f9746ecc
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a phishing or credential harvesting attempt. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports the attack pattern of using link farms for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/123?utm_term=conduction+heat+transfer+examples+pdf PDF link annotation
    • http://zawugudumi.getenjoyment.net/butezasividujevixiz.pdfIn PDF document text
    • http://pe50off.pro/how_to_control_bose_soundbar_with_apple_tv_remoteyy5ea.pdfIn PDF document text
    • http://onlineeshop24.xyz/position_of_adverbs_exercises_with_answers93aav.pdfIn PDF document text
    • http://dalnoboyi.xyz/lezojeguvutejalutuc62dj.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/ms_project_2010_user_manual.pdfIn PDF document text
    • http://farotosinotom.mywebcommunity.org/abacus_level_9_worksheets.pdfIn PDF document text
    • http://pewodebepefawi.scienceontheweb.net/biostatistics_lecture_note_carter_center.pdfIn PDF document text
    • http://zexupopudoxop.iblogger.org/vowebiziruzumumos.pdfIn PDF document text
    • http://mavixepajifulem.scienceontheweb.net/the_triple_crown_club.pdfIn PDF document text
    • http://ibkreactiva2020.com/cms_billing_guidelines_for_telemedicinejbtb0.pdfIn PDF document text
    • http://viwoxavufonodu.22web.org/dodefebiro.pdfIn PDF document text
    • http://munasimowijuxi.getenjoyment.net/kofapalu.pdfIn PDF document text
    • http://gonugotez.22web.org/99234748234.pdfIn PDF document text
    • http://websporizle4.com/cfa_level_1_question_bank_2018qv4tk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xemigososefof.atwebpages.com/learning_strategies_book.pdfIn PDF document text
    • http://wasuvag.rf.gd/zuvojusaroligifologopif.pdfIn PDF document text
    • http://vanudedu.epizy.com/88603150234.pdfIn PDF document text
    • http://wukevivetarapu.myartsonline.com/pabajemanerexutosor.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/meeting_minutes_template_word_document.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/cartoon_movies_in_tamil_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/macbeth_shakespeare_download.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_off0000d5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CC 5368 bytes
SHA-256: b84d9bc0fd915f22ca7edea07e6f79aa24cc58a1f0782650f152a8e7f0e6d3c9
font_01_sfnt_off0000e7e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E6 11528 bytes
SHA-256: 565cfd59525b49ca84bf788f98bab4fad3e5c16319c7182f6d7ae93387dd5297

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