Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d34f7c55110461…

MALICIOUS

PDF

95.3 KB Created: 2021-06-26 04:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 241151c95ecb004771cf2dcd7afc923d SHA-1: 4fea0d7d4af6b70841fc9e0b1faa42a5b9be5929 SHA-256: d8d34f7c551104612fb25c4b38131c98396ff9ae2b84875d0c453c632a4089cb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised CMS upload storage and disposable hosting, indicating a link farm designed to obscure the ultimate destination. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery through these redirects. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://engroupe.ca/aym_image/files/10433332129.pdf In PDF document text
    • https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/5ei86op7t70jfuivjvceckcjuf/17529615917.pdfIn PDF document text
    • http://stpatricksreunion.org/clients/84553/File/30183523746.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877c0c29f47---50152753709.pdfIn PDF document text
    • http://abc-tel.ru/data/File/zegovamerojizul.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088dc75e7392---vevumijizowebi.pdfIn PDF document text
    • http://exosportsante.fr/ckfinder/userfiles/files/2787474487.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/1vt0h7rnvctr3fi1jh2akag3v6/revamig.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/s29p4147tfpvfnpmes4thl2lam/dojun.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160873e51e2b21---roxiwopupopituge.pdfIn PDF document text
    • https://cjsc.se/ckfinder/userfiles/files/xalowowoporerurizafeta.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608751b27a13d---rakajefefamoleturepajepix.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/f2k6dae01qitd4vh323stg5dmj/66552790870.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/0rjm2ap16isr72q8ndgcj8ghhm/waxogeka.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/ab763bc322dcf3415e3dacfd0b00ebea/7495696039.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/3784ae1984902a878c9189f0682f9899/83786719875.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/o94dd7toh1l6r4f9ptr7na8lc4/68995797845.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/46edc917bb7ecc260ff61d087984ea32/tikoweturit.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/aar102ba1sja5gl6gh9cjdvtiv/53063539439.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160921607017a9---65710098637.pdfIn PDF document text
    • http://www.addvanceo.info/userfiles/files/savefovalev.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16088fa0423314---suzekigawuxagok.pdfIn PDF document text
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/f63b9b3fcecf09f2a06d4f31342d0ee6/94616582702.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/vedamubufuseputig.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebce177b55---60260081155.pdfIn PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef62318f69---50650582586.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=natural+born+charmer+read+online+freePDF 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_off0001118d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001299f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1299F 17568 bytes
SHA-256: 212fa00c159ebce321c65470e7d08037b8f08f60cd05d8c335d0d84f151199ed
font_02_sfnt_off000156ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156FF 10792 bytes
SHA-256: 94d51e887d505cfbc0bbcae55330ab5dc4284888972e84347e5623f5d9aedd61