Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7a9499c698b5ea…

MALICIOUS

PDF

64.0 KB Created: 2021-02-27 02:50:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34da09ff0b6a2ded11e37a462883d74d SHA-1: fa7a61d72ba766de5fee4a66207901dc27c00ee3 SHA-256: 7c7a9499c698b5eada061d99ff618b317508c44340ca7aef0b51d790ccbd3421
182 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains a high number of embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to known malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8602

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/award?keyword=how+starbucks+saved+my+life+summary In PDF document text
    • http://mizebojusur.mypressonline.com/favuxiridadifarepamazuwew.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/baricitinib_fda.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/7639038827.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/beats_solo_wireless_headphones_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/the_process_auditing_techniques_guide.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/casio_edifice_bluetooth_tough_solar_chronograph_watch_eqb-501d-1aer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5fe59985587e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481402/normal_601b62dcbdc60.pdfIn PDF document text
    • http://lofajemami.sportsontheweb.net/norcold_rv_refrigerator_problems_solutions.pdfIn PDF document text
    • https://tepugajir.weebly.com/uploads/1/3/0/8/130874129/4589869.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/bpBTksd/fox_mountain_bike_gloves_orange.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453537/normal_600a76044f71e.pdfIn PDF document text
    • https://cdn.sqhk.co/wudajelu/ijEFick/buffer_social_media_manager.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/formation_assistant_dentaire_onisep.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/71146139479.pdfIn PDF document text
    • https://cdn.sqhk.co/dogutadova/cNw44x3/jejikemerobudesi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377400/normal_602cd87b5b06b.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/gerhgjf/3d_maze_game_adventures.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/12065816808.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DF 5360 bytes
SHA-256: 38d163443f543ce2fb7e8fc5115d6d6066aa8cbc25e2dcb716d178e3bf4dfe5b

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