Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd9d2bf3a393895…

MALICIOUS

PDF

81.6 KB Created: 2021-09-14 13:09:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 3b9f50bf0c992f04b59442764ada3dc8 SHA-1: a611608f89ade28c1d02144a1b9f3bc56ce93e90 SHA-256: 3dd9d2bf3a393895d1bf4ab966ecd25202c74bee2433de8d6ca638aea1c7436c
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://igraonica.me/userfiles/file/xesalukobo.pdf In PDF document text
    • https://drosamahetta.com/userfiles/file/85932056022.pdfIn PDF document text
    • http://373113.linker.tw/files/21554973205.pdfIn PDF document text
    • http://veoguidecostarica.com/ci/userfiles/files/75014854669.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f9502db73f---42814220758.pdfIn PDF document text
    • https://isagrinio.gr/userfiles/56185483114.pdfIn PDF document text
    • https://windfreeklima.com/upload/ckfinder/files/36478261223.pdfIn PDF document text
    • https://marbletreasures.com/uploads/image/files/felazizi.pdfIn PDF document text
    • https://cowichanmusicfestival.com/userfiles/file/tenavapu.pdfIn PDF document text
    • http://thietbiotoviet.com/Images_upload/files/58068120748.pdfIn PDF document text
    • http://net-marketing.hu/images/files/44411149302.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb8d414ba0---39757237204.pdfIn PDF document text
    • http://nova-auto.com/upload/vaxemu.pdfIn PDF document text
    • http://edv-denk.com/userfiles/file/76118507020.pdfIn PDF document text
    • https://octvads.site/js/ckfinder/userfiles/files/26531403515.pdfIn PDF document text
    • https://printsolutions.ro/uploads/wysiwyg/files/salinutoso.pdfIn PDF document text
    • http://htwy.com/upload/file/38122786024.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/f8a1f567a9d651bc29855d100cc0b366/jadavukakejisorezobo.pdfIn PDF document text
    • http://88cpap.com/userfiles/files/gabujezujolekikonebujeva.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613b5aa611d54---fatujopekoveko.pdfIn PDF document text
    • http://www.smartlandgroup.com/ckfinder/userfiles/files/woludato.pdfIn PDF document text
    • http://hfengly.dk/skoleportalen/userfiles/file/xixidezakubenutag.pdfIn PDF document text
    • http://metrominicabs.com/survey/userfiles/files/dirutiviwepikejiwi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=assasins+creed+androidPDF 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_off0000dad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f2e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E4 18072 bytes
SHA-256: 4e72d0ca3ba1201e62cb9f201aea6863928377abd011fe5fc6c3076232f9359d
font_02_sfnt_off000121d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D0 10200 bytes
SHA-256: 54bd2f6674c1f09bb8496896222c6d9b63c55e67f3c95a47bb2967cde1d5c9b7