Malicious PDF — malware analysis report

Static analysis result for SHA-256 6379f63919b14326…

MALICIOUS

PDF

79.5 KB Created: 2021-03-15 16:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 77d09bea34b36c927d11722d544f3a9a SHA-1: 1ca0a914cea4ef243ecb820c4ee7f1857c225d3a SHA-256: 6379f63919b14326e2b4c40c7de22724b131d0f09cf727620219b64c62da9a78
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

The PDF document employs a social engineering lure, instructing the user to install a browser extension or update under the guise of a 'web to pdf' converter. This is a common tactic to trick users into executing malicious content. The presence of numerous external URIs, including a link farm on disposable hosting, further supports a malicious intent, likely to download a second-stage payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://xezojetit.ru/award?keyword=web+to+pdf+google+chrome+extension PDF link annotation
    • http://wijasagasipode.getenjoyment.net/rekobaxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460266/normal_6042ef6e7a174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416494/normal_604a17f7e5d07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_602dade4e5c44.pdfIn PDF document text
    • http://midarujiwuvi.mygamesonline.org/42397027861.pdfIn PDF document text
    • http://premial.su/snark_tuner_battery_liferv5jk.pdfIn PDF document text
    • http://sezemowogoroz.iblogger.org/will_no_game_no_life_ever_get_a_season_2.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/66910250254.pdfIn PDF document text
    • http://kojijeku.mygamesonline.org/interpipe_seamless_pipe_schedule_40.pdfIn PDF document text
    • http://barurizex.iblogger.org/do_dean_and_castiel_ever_get_together.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374704/normal_60095665e7d8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403421/normal_5fd27f297ffb8.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/11321816599j88pd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vekabun.myartsonline.com/where_can_i_donate_clothing_during_covid_19.pdfIn PDF document text
    • http://tenudif.epizy.com/patient_protection_and_affordable_care_act_full_text.pdfIn PDF document text
    • http://lojiwifi.epizy.com/mimenixekajigedetirew.pdfIn PDF document text
    • http://kobitosen.epizy.com/valupevizelomoxesomop.pdfIn PDF document text
    • http://labomodofu.epizy.com/how_do_i_get_google_maps_on_my_iphone.pdfIn PDF document text
    • http://gunebudapuko.epizy.com/cantate_domino_choral_sheet_music.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_off0000f74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74F 5580 bytes
SHA-256: 7d2d0f2ceb69f259fbaee1d54e78d3e1d9fe52855c5feac933b986792dc8bf41
font_01_sfnt_off00010a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A33 11396 bytes
SHA-256: bc2c2c9ed3d3ba08c6e953f15d042e81185ce1c9274bafcde2b7ec8d6d49c97e

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