Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fddd0f70e25627…

MALICIOUS

PDF

73.1 KB Created: 2021-09-16 01:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 17c83d33d733ee8444f9ee4ee58a36ed SHA-1: 5385e485e60ce8ba2da88882e9b35b6b9a2dc796 SHA-256: f2fddd0f70e256270fbf9e8ff268c6b8c85dba2b8b90c1568dbffb6d59512b33
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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://studioiulianella.it/userfiles/files/66200535708.pdf In PDF document text
    • https://pre-www.bridge-academy.com/uploaded/ckeditor/files/30929812723.pdfIn PDF document text
    • http://phunphu.com/userfiles/file/puwutemikaxolo.pdfIn PDF document text
    • http://tuyothuyluc.vn/webroot/img/files/15942229876.pdfIn PDF document text
    • https://sapthagireesyathra.com/userfiles/file/58198453347.pdfIn PDF document text
    • http://cukrarnakolbaba.eu/obrazky/files/59633970206.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/to1ij58lis1a4c4u2a20ucki0u/55493106646.pdfIn PDF document text
    • http://belovosushi.ru/files/renafajanewaxujojimeni.pdfIn PDF document text
    • http://tbvshungviet.com/upload/files/22378153459.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/93276801462.pdfIn PDF document text
    • http://nbc.ua/design/pic/file/mofamivodubaba.pdfIn PDF document text
    • https://bloomlight.pl/_bloom/file/27267152203.pdfIn PDF document text
    • http://pedraferro.com/files/files/kalarobafulokiwanar.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/161303f5b0157b---lufawojisan.pdfIn PDF document text
    • http://sun-apartments.pl/data/pages/44561083536.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/4793409b8351fa656100b7d688646d8a/98863338289.pdfIn PDF document text
    • http://flirtproducties.nl/ckfinder/userfiles/files/48509344475.pdfIn PDF document text
    • http://sibzakon.ru/ckfinder/userfiles/files/muzemovabosewejiko.pdfIn PDF document text
    • http://wuxihemei.com/ckfinder/userfiles/files/20210902_094540.pdfIn PDF document text
    • http://cka-shiba.com/ckfinder/userfiles/files/13581441739.pdfIn PDF document text
    • http://mkconline.com/landmark/ckfinder/userfiles/files/dodalizarunij.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/risod.pdfIn PDF document text
    • http://wami.cc/data/files/jolisemigatozibiborinu.pdfIn PDF document text
    • http://ylgems.com/file_media/file_image/file/98870594946.pdfIn PDF document text
    • http://hillsdalehorseboarding.com/ckfinder/userfiles/files/tuvubezefud.pdfIn PDF document text
    • http://186086.com/upload/files/lafedelud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=vidmate+app+download+for+android+mobilePDF 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_off0000bbf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d40d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD40D 10684 bytes
SHA-256: fdd2c876c9020efb830523812bafb2e8358c73f9b95e18b8291b602cab84f4e8
font_02_sfnt_off0000ec4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4A 16472 bytes
SHA-256: 47b72e8117de0707c4739e47ac8c857d80236e760339566e5f87ae0a1dbca252