Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb067c32224e72a5…

MALICIOUS

PDF

88.2 KB Created: 2021-07-01 19:05:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f5c68498517ca620b60faa2a9f97535c SHA-1: d8d780f5f59f32f2a7ef252a5d56b497eb7e3798 SHA-256: bb067c32224e72a5b1e426f95f201bd09f259d8d26a27310637dcfea9753091e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites hosting similar PDF files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The presence of link farms on compromised CMS uploads suggests an attempt to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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 https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7c2dd323d2---sonidimebiditiv.pdf In PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ad0391d30f1---gatotenenogidozun.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210701162351180.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f6ef47b2e---bunaxorujavumedomemar.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b25cc7a3e66---63924601175.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071427a92256---danefopopi.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/tksi3uq2vh60mad1vq7h8lhf14/mapijemupozituxiwo.pdfIn PDF document text
    • http://dashoernerboot.de/userfiles/64128686147.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/9fae70b625257e770f7152439c485e22/67980489460.pdfIn PDF document text
    • http://arcenevents.nl/site/upload/files/14605575215.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/63430869471.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16098c6300725e---davoputupikozikitafi.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1e62c88a9---88067310548.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/22061630853.pdfIn PDF document text
    • https://miaousland.fr/ckfinder/userfiles/files/23834523701.pdfIn PDF document text
    • http://lesen-und-schenken.de/userfiles/files/ruxelegolewakipixap.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/a8e7b49b362c53478a77ee26dd2595b4/11959299534.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/bazimodexavitike.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/1673ecfb6e9b953db7c8685418d3a22a/29038192682.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aea07e8aad2---31860518672.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/77c651fbf26496574c8c3e7e34e8a4e5/pumutefasekafed.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/72p61p6nqtpb3f80c0lipjtf63/zanon.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/74e80b74aa4668605bc06f8e37990891/46324062846.pdfIn PDF document text
    • https://nilsahost.com/calisma2/files/uploads/51538432563.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/4df7da7506565fbfc433b987b72d2429/74494480808.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=joe+jackson+it%27s+different+for+girl+lyrics+meaningPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2625c911a2---7433961779.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 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_off0000f12d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12D 11180 bytes
SHA-256: 1110ffd895d3a599b7620bd4371b246151bd9c0d77f22a0be202401825962eca
font_01_sfnt_off00010b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B31 17844 bytes
SHA-256: 83362b1e4e7647dc429a28bdab48bf774dbe6f50f521e46ba86e059b16493f54
font_02_sfnt_off00013936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13936 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1