Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbeceda8f6cd8be8…

MALICIOUS

PDF

97.5 KB Created: 2021-08-03 07:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 238da55e1a92b2afa4d38e787f78a0cd SHA-1: 50cc984439c73ff10c3de5ed7097037f950c92f4 SHA-256: cbeceda8f6cd8be8c93986e00b93168b2936cf7abb7ac4f78cae258703d284f2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The file's structure and embedded links align with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/oi9rt3550h2viqvdcvamgahmjb/vanojuxufukosuta.pdf In PDF document text
    • https://readandenjoy.ae/userfiles/files/pegejipipofupaxojugakotuw.pdfIn PDF document text
    • https://www.hinkler.com.au/application/third_party/ckfinder/userfiles/files/30542301233.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8aeec4d84d---53421521227.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b24036bd1---wexumobenimegapum.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/73ee133c8cd0be97ba6760cd284d1b93/21462855930.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077fd60c7872.pdfIn PDF document text
    • http://lalinpress.com/ckfinder/userfiles/files/migixofojudevasimavapopa.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/efpujq30ug3hc97cpnjk80lsg2/pakomufokotufejumunotuge.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d79114b04a9---vegalepazepizi.pdfIn PDF document text
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/d6591b56eb98e4c6f26369e0283b674f/bubipesiku.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/p225hemko619rg99omhsfahsc2/fiduwetona.pdfIn PDF document text
    • http://thaoduocquyhiem.com/userfiles/image/file/wodukexijonitabenumiwem.pdfIn PDF document text
    • http://www.udelimpa.es/ckfinder/userfiles/files/luzodurinet.pdfIn PDF document text
    • http://odpadykj.cz/UserFiles/File/xazitowoguw.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/b7031aaf95c9c05d5ddfb7791e1bddbc/91814275262.pdfIn PDF document text
    • http://allmedicus.com/userfiles/file/bifijit.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/kunfbv6e6o1av8d877i2aijp24/25900718508.pdfIn PDF document text
    • http://studiofranzoni.eu/userfiles/files/rumiwavezejevamezevow.pdfIn PDF document text
    • http://inglewood1968.com/clients/68690/File/2405654039.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b5644745b60---62198985354.pdfIn PDF document text
    • http://tznjl.com/userfiles/files/61787516179.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=ferengi+rules+of+acquisition+pdfPDF link annotation
    • 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DA 17284 bytes
SHA-256: 99dacdecd0b2ece07a75b6fe4a688b380a39ab1b268318f99b87f52f3ed3795f
font_01_sfnt_off0001461a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1461A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E31 11016 bytes
SHA-256: 17112eb43238662d7b639652d068df7fa834095374eb8a2b09e43224c4f30c31

Open this report in the interactive analyzer, or submit your own file for analysis.