Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5c430dade2c754…

MALICIOUS

PDF

76.6 KB Created: 2021-03-01 03:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a013273958f2c331c6a2d51a117cc947 SHA-1: f528ecd8ced3895841b77ac351680ee01bcd1443 SHA-256: cc5c430dade2c75492b91ac060d22a391de509ac7aef71b50074e26fb2e3e3ac
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or serving a malicious payload. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://vilenefex.ru/award?keyword=what+is+review+of+related+literature+all+about PDF link annotation
    • https://seporulakokifo.weebly.com/uploads/1/3/4/5/134590723/vajudugovumax.pdfIn PDF document text
    • http://jurojegame.getenjoyment.net/how_to_check_tcp_ip_stack.pdfIn PDF document text
    • http://limons.space/moto_g_fast_user_guide5iv54.pdfIn PDF document text
    • https://fidovasunub.weebly.com/uploads/1/3/0/8/130815093/fodenufapexolomutewe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477147/normal_6012b13650873.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/a_supposedly_fun_thing_ill_never_do_again_quotes.pdfIn PDF document text
    • http://1cats.space/anatomy_and_physiology_book_for_nursesjlgc9.pdfIn PDF document text
    • http://btsworld.org/wezinodovywpf.pdfIn PDF document text
    • http://arm-watch3.club/tigalirezuwurard7zxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_601e842051266.pdfIn PDF document text
    • https://cdn.sqhk.co/baxoladipezu/b6TATLv/16422555617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448330/normal_603070e700d66.pdfIn PDF document text
    • http://itdiscounts.info/18164594967uf9ae.pdfIn PDF document text
    • https://xesuxikoju.weebly.com/uploads/1/3/4/0/134095833/eb80b2d94a9.pdfIn PDF document text
    • http://ihsteam.ru/characteristics_of_effective_communicationw0eiq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465259/normal_602d919da322f.pdfIn PDF document text
    • https://wunurobi.weebly.com/uploads/1/3/4/8/134881210/silipesudo.pdfIn PDF document text
    • http://fionainthefield.org/wijumakamunagonaseya3gi.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/gcIhbja/1077481433.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/ibwumhj/army_vs_zombie_apocalypse_full_movie.pdfIn PDF document text
    • http://abreudesigns.com/how_to_print_facesheet_on_epicw5w8s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bogalibamadom.myartsonline.com/44383465922.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_off0000ed9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9E 5300 bytes
SHA-256: d65e7ab3495c5bea061bbe0a395d6b5239c02f23015b0b4cfc2838ad8db3cae0
font_01_sfnt_off0000ffb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB6 11156 bytes
SHA-256: d6e001cb167f594bd37badde43a643088f686d366ec71bc54a2640d2dcfa7642

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