Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddb4a9a2d531237…

MALICIOUS

PDF

86.4 KB Created: 2021-08-23 10:07:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 16db7b05eb0dd5a852b83f9e36ab0b69 SHA-1: 7c5a1474dcd4d4709ce01a437ad2b15a024a9c05 SHA-256: 3ddb4a9a2d5312375c4a1b59e2777e2b391d796f21c81f891c7be9ff632875e1
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://zonwering-belgie.com/ckfinder/userfiles/files/63506130855.pdf In PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ef943215e---17280075922.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/hicn8b07to2meog8ortog49ecg/nopif.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160acc68ecb8dd---70634262063.pdfIn PDF document text
    • http://modelseafarm.com/kweb/ckfinder/userfiles/files/mivixekazukebevelevuled.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1609408d0ea3c6---linolamufixaliv.pdfIn PDF document text
    • http://evolution-dev.com/file_media/file_image/file/70328542566.pdfIn PDF document text
    • http://thebrownsfamilyreunion2008.com/clients/81208/File/12252148867.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160ade8ab7314f---leropatisirapasa.pdfIn PDF document text
    • http://ventiliatoriai.lt/js/ckfinder/userfiles/files/pitunerin.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160e21dce766a0---sepilomu.pdfIn PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/roferani.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a68d2d6444c---81745037878.pdfIn PDF document text
    • http://yomamasushitogo.com/uploads/files/jokof.pdfIn PDF document text
    • http://turhantur.com/turhantur/files/bigomumiwupirosewavid.pdfIn PDF document text
    • https://carcable-bg.com/uploads/pictures/files/62862225335.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/5ho1i4tpd84gs954c1rghmli41/1892293113.pdfIn PDF document text
    • http://nitexprofi.cz/userfiles/file/govobovifolam.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/iutc1d2nki440n7tcf92j598lp/pofakelijudabuzisikinow.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e39bef956e9---lobitukawavizikunotilu.pdfIn PDF document text
    • http://dagmar-e.de/userfiles/file/jedunova.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=battle+warship+aircraft+guidePDF 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_off0000edea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEA 10916 bytes
SHA-256: 2a0f5b4f28ff610d7e5969f132f5d574a2c94324d74bf43dca1da2537ec0b734
font_01_sfnt_off00010738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10738 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F4A 16704 bytes
SHA-256: cedd752e1c8c1af109fcb2c74b902928d70e480f99e25815d13b217e68025d6b