Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87a75aee0032ea3…

MALICIOUS

PDF

81.8 KB Created: 2021-10-19 16:55:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: ff7cd0d2da503e9d12594ca92dab15c3 SHA-1: 5b55e214eade455611693b70d3d5be88653db458 SHA-256: f87a75aee0032ea3bcc8d1933d5ef5e1a0ff8b6d16436ef1c47e8279693be852
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 https://vjlabor.pitscovn.com/uploads/Upload/files/75204280252.pdf In PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/c0f3f522427be51443438117080c60f6/52608099369.pdfIn PDF document text
    • http://www.psoealora.es/ckfinder/userfiles/files/debajufatujifuwib.pdfIn PDF document text
    • http://autoklej.pl/app/webroot/media/files/sezupepasuf.pdfIn PDF document text
    • https://xn--80aesyq.xn--p1ai/files/file/xobexowuvonaju.pdfIn PDF document text
    • https://kottayammedicalcollege.org/CMS/ckfinder/userfiles/files/85879853866.pdfIn PDF document text
    • http://dsacare.com/admin/uploads/file/naxibijakugetolikabute.pdfIn PDF document text
    • http://hongsung114.com/files/fckeditor/file/wufotirofojenixube.pdfIn PDF document text
    • http://commsoft.nu/demo/ktb/wsmbilder/files/61044134321.pdfIn PDF document text
    • http://studiotrusso.it/userfiles/files/94590285725.pdfIn PDF document text
    • http://gdlejia.com/uploadfile/files/20210927_042655.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e796ecce4---wafawojarin.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16148bed152e64---jegobomikexixeriromovaz.pdfIn PDF document text
    • http://omgmediatank.com/userfiles/files/runalo.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/895a18d812958d3fa014ed5bd4bfe646/17180372974.pdfIn PDF document text
    • http://balade-pierry.fr/userfiles/file/64698686925.pdfIn PDF document text
    • https://laurallo.com/ckfinder/userfiles/files/80783314717.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/neroletapojusivofi.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/girufele.pdfIn PDF document text
    • https://verner.lt/images/files/33624029628.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1615dff4ad2dd6---fikufi.pdfIn PDF document text
    • http://phelieuviethung.vn/upload/files/kopixob.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/RC0zOYPQW8A/uplcv?utm_term=como+hacer+ropa+para+mu%C3%B1ecas+grandes+paso+a+pasoPDF 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_off0000d729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD729 11060 bytes
SHA-256: 186a810638016cc4b5717c10f31c534c0b7e761c6cbd001918fce19a2587ccc2
font_01_sfnt_off0000f043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF043 18628 bytes
SHA-256: 1da7e30c1288e6a658151cf8bbb63c68050cfac50af2326d94bcb3b4b82eb8ba
font_02_sfnt_off00011ec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1