Malicious PDF — malware analysis report

Static analysis result for SHA-256 4450716c9d60350f…

MALICIOUS

PDF

75.2 KB Created: 2021-06-19 09:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-11
MD5: b6319067d4339c7c162454598006efab SHA-1: 3b190e681a89821ebc8edbd76e839bef0c8994e6 SHA-256: 4450716c9d60350fd86fa75b1473b5abda94b4d430037b4120ce4ee3284e9518
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/e11ea9cbdffe72651b4a03465d2897e6/93099267471.pdf In PDF document text
    • https://travelstore.tn/userfiles/file/11550295743.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9bef1515b4---saluneku.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/lu6odl3lokm14lua1e4jojjoj0/liwevapatilawixumud.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/ug64fb571j6ec12su9c9ja46md/93350344413.pdfIn PDF document text
    • http://skncn.com/u/files/25977064757.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/ble518ig80rmub6b4itklcjbj2/29319685057.pdfIn PDF document text
    • http://ankamet.com/userfiles/file/54878525513.pdfIn PDF document text
    • http://apsencollege.org/test/fckeditor/file/madidomatexekuzijin.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076309dbe779---22073130229.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/lokikulefirugag.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/f4960572591bd9082900595facb7a2b1/42965684470.pdfIn PDF document text
    • http://premium-h.info/files/files/gusotaf.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/85077920978.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/206d63f9df0cbf2000229ec1d4743ca6/69622978182.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=wr3d+mod+2k19+download+for+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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79C 5548 bytes
SHA-256: 04ab0d8d7b66b2215c8e09a4d48d239e4e43f40d5af65825274b6ac2982ba75d
font_01_sfnt_off0000fa85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA85 10852 bytes
SHA-256: a2a7d31cc5b6be27bee2f043be7a9475198b5087d9da3f3f90d24d44bcdffcab

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