Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fc88f7648ea23d…

MALICIOUS

PDF

79.3 KB Created: 2022-05-03 13:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-18
MD5: ea6e7d1dbb03cbf6287a889879093cc7 SHA-1: 5bb4ff359920a783e24ae5552d1e722b6692f400 SHA-256: 26fc88f7648ea23dc030c4e8648a81fdbb2a2c5f2883c2f079c6e196ef6913d6
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded links, many pointing to compromised WordPress sites or disposable domains, designed to redirect users to other PDF files. The document body text, including references to 'American Gods cast season 3 episode 1', serves as a lure to encourage clicks on these malicious links. The combination of these elements suggests an attempt to distribute malware or phish credentials through a link farm hosted within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 8

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://chongros.com/userData/board/file/72402753577.pdf In PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/162215712d3d36---jugigokemoradamelu.pdfIn PDF document text
    • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/76278512469.pdfIn PDF document text
    • http://zonatourism.com/media/ck/files/vetimitunowefikaku.pdfIn PDF document text
    • http://casinodanmarkjackpot.dk/userfiles/file/74689601643.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621fe23bbc060---57491817160.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/4291519235.pdfIn PDF document text
    • http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/xowokiziloni.pdfIn PDF document text
    • https://fme.ba/kcfinder/files/25683602977.pdfIn PDF document text
    • http://daiichihousing.net/uploads/news_file/63448841873.pdfIn PDF document text
    • http://djpress.pl/Image/files/92755277056.pdfIn PDF document text
    • http://harmony-stone.info/js/kcfinder/upload/files/jofekunane.pdfIn PDF document text
    • http://atek-ent.com/upload/file/6883871096.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/uck586ns4814bccmov5nb923b0/8865642059.pdfIn PDF document text
    • http://aftp.bg/userfiles/file/57793047560.pdfIn PDF document text
    • http://someteme.es/archivos/_20220429131536.pdfIn PDF document text
    • https://taheri-tennis-academy.com/images/userimages/files/98823511466.pdfIn PDF document text
    • https://www.systemswecare.com/admin/kcfinder/upload/files/ratajajesusamutatinawaxag.pdfIn PDF document text
    • http://techbico.vn/uploads/image/files/kawiwobiluteburuzulojon.pdfIn PDF document text
    • http://vaonhaphatphap.com/images/uploads/files/vokuwinamoxuxotime.pdfIn PDF document text
    • https://kvzriu.org/images/file/sakibedinufelavejeren.pdfIn PDF document text
    • http://umffz21.ru/admin/ckfinder/userfiles/files/gimibusaxu.pdfIn PDF document text
    • http://dopuskvsro.ru/UserFiles/pujunemamixesefoba.pdfIn PDF document text
    • http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/goxadi.pdfIn PDF document text
    • http://svaz-podnikani.cz/files/file/dovavevivigoze.pdfIn PDF document text
    • https://fecuq.co.za/YmrXLWy8?keyword=american%20gods%20cast%20season%203%20episode%201PDF 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 extracted file (font_00_sfnt_off0000cf18.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cf18.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF18 17644 bytes
SHA-256: aa76f1e40a0c633bd74e6f6e3e72cb50b2be2e14308de3cb4093dd08df84e362
font_01_sfnt_off0000fd2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2F 11016 bytes
SHA-256: bae78c0026c87a85eebc10ac9fa55ed9aecb955edb05060fc547e8da082c8433
font_02_sfnt_off000116b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1