Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c9c05a4fe870ea…

MALICIOUS

PDF

74.7 KB Created: 2022-05-06 09:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 36d1d48abb2412126cc06d75ddb41ee2 SHA-1: 1ca74302df15baea642858aede8f0e0b770bf614 SHA-256: 25c9c05a4fe870ea570fdab22914195eb3dbe6146a7a8ade5313a777168fc4dd
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://norin.co.za/YmrXLWy8?keyword=scheme%20of%20work%20for%20primary%204%20pdf%20book%20pdf%20download%20windows%2010 PDF link annotation
    • http://mcenterdk.ru/fck_editor_files/files/76576156547.pdfIn PDF document text
    • https://ziwolowuwuxux.weebly.com/uploads/1/3/5/3/135321756/111f96cc0c86548.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/162691f26cb0b2---39689838152.pdfIn PDF document text
    • http://medlabtests.com/kcfinder/upload/files/96160650849.pdfIn PDF document text
    • https://garmin10.ddbseven.cl/userfiles/file/lipibadibi.pdfIn PDF document text
    • https://vutofuwejazow.weebly.com/uploads/1/3/4/3/134321520/1ab62.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16264a038b7181---perogezov.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16273dac18541f---pezus.pdfIn PDF document text
    • https://www.todra.com/admin/ckfinder/userfiles/files/webala.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/16771964599.pdfIn PDF document text
    • http://rootbeadmill.com/upload_fck/file/2022-4-19/20220419231753207308.pdfIn PDF document text
    • http://ig-einheitsloks.de/medien/file/74953552315.pdfIn PDF document text
    • https://goldmenu.com/userfiles/file/pefepolo.pdfIn PDF document text
    • http://saringkarnwood.com/UserFiles/file/xomajivudopoxawozekijawom.pdfIn PDF document text
    • https://tekulumadon.weebly.com/uploads/1/3/4/7/134767252/noxobila_vapup_rulowevi_lulurare.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/162634bca32910---bowetuvumuvowew.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/24739688937.pdfIn PDF document text
    • https://zilifanaj.weebly.com/uploads/1/3/4/4/134444715/gutejupe.pdfIn PDF document text
    • https://dacinsara.ro/fckfiles/file/wanukelajemafotota.pdfIn PDF document text
    • https://tradingphrases.com/userfiles/files/mudeto.pdfIn PDF document text
    • http://noithatmyhome.com/img/files/34789511825.pdfIn PDF document text
    • http://puginternational.com/ckfinder/userfiles/files/balebixovuso.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000bcd3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000bcd3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD3 16776 bytes
SHA-256: 969bd64738676ca461e7f81fea476b3f901ea2af01bae6fc1449511041c86acb
font_01_sfnt_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 11548 bytes
SHA-256: b1818f4ff964bebed3a103f352d18c4d3fe5a34b011fd23abf6d1099ee654af5
font_02_sfnt_off00010398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10398 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1