Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b25092ee2fdda8…

MALICIOUS

PDF

73.0 KB Created: 2021-10-03 21:13:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: d61dc4b4c81b9bf62332a068daddea53 SHA-1: bdcc020c4e6492c9a76c184096cafe815fa11048 SHA-256: 72b25092ee2fdda84314e3c63d9200b5c590ebda087273c07270e201e61d9fb1
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 http://hdg-gmuend.de/userfiles/files/52825520586.pdf In PDF document text
    • http://ebrinteractive.com/userfiles/file/povapifejalowed.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16145a7fc6689f---72264814849.pdfIn PDF document text
    • http://otestmanager.com/club/data/userfiles/file/20210921172258.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614bb47b1c88c---mujis.pdfIn PDF document text
    • https://b7b.reviewz.eu/app/webroot/files/userfiles/files/57007203320.pdfIn PDF document text
    • https://ikuseikyokai.jp/ckmedia/files/jilorajat.pdfIn PDF document text
    • http://erpos.sk/data/files/vamuralubivemojudide.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f03b34118c---1565806243.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/66945351812.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc2138ad1f---wunebikebipaso.pdfIn PDF document text
    • http://awfiowv.love-mrt.com/upload/files/lenijekaselonudoweg.pdfIn PDF document text
    • http://fresh-j.info/images/uploadedimages/file/rejoduzogalavekixo.pdfIn PDF document text
    • https://euroialinsol.ro/userfiles/file/fagadarati.pdfIn PDF document text
    • http://conhantaoankhanh.com/webroot/img/files/bubukiwatuso.pdfIn PDF document text
    • http://neurooperations.com/ckfinder/userfiles/files/pavubimexadamekadodawuwol.pdfIn PDF document text
    • http://citysoupsbellevue.com/uploads/files/97243787542.pdfIn PDF document text
    • http://ebrinteractive.com/userfiles/file/kogated.pdfIn PDF document text
    • http://www.valathors.com/ckfinder/userfiles/files/lovesagunitojek.pdfIn PDF document text
    • https://ceylanotel.com/firma/files/xutova.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/161476e02769da---22545995325.pdfIn PDF document text
    • https://ewt.cz/res/file/14757620766.pdfIn PDF document text
    • http://www.rafaellucenaehijos.com/ckfinder/userfiles/files/vavariva.pdfIn PDF document text
    • https://preciseenergygroup.com/media/bogilale.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/23939239497.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=isothermal+compressibility+of+waterPDF 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_off0000b7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cfdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDF 10932 bytes
SHA-256: b13277dead65ffcc7542dcdb4b775f83a7daf352776d8d418047f1e13f43e8d6
font_02_sfnt_off0000e913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE913 17584 bytes
SHA-256: c5e1833f5949e16248981b0abbeef5e3b60de49a754b72be93b014f08e4c877f