Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc7dc77d54200b8…

MALICIOUS

PDF

113.9 KB Created: 2022-04-11 12:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: b9b331e3aa0c4b02254ed4fb827cb03d SHA-1: 416063952e0f02800c8f3f43aaa0192275331608 SHA-256: 1dc7dc77d54200b8233eb18a537fa8de5887d03eedead342b0cac8a19b5bf47f
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://yoyep.co.za/YmrXLWy8?keyword=lemony%20snicket PDF link annotation
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/o6i946io9cnfdvkt6bc4b3vjkh/baborumow.pdfIn PDF document text
    • http://tvkinter.com/file_media/file_image/file/xuzoko.pdfIn PDF document text
    • http://kirpichi.su/kcfinder/upload/files/mobirulolimixelutibisik.pdfIn PDF document text
    • http://medwin.kr/userData/board/file/11551985231.pdfIn PDF document text
    • http://c-six.it/userfiles/files/85515274402.pdfIn PDF document text
    • http://cichanski.com/Upload/file/33083062990.pdfIn PDF document text
    • http://www.glutec.it/_admin/kcfinder/upload/files/42588662064.pdfIn PDF document text
    • https://taichielite.com/louis/taichi/ckfinder/userfiles/files/motifim.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/7027253.pdfIn PDF document text
    • http://ylgems.com/file_media/file_image/file/loneriw.pdfIn PDF document text
    • https://trainova.com/userfiles/file/12105436718.pdfIn PDF document text
    • http://aokunoil.com/ckfinder/userfiles/files/kawuletumad.pdfIn PDF document text
    • https://somanenor.weebly.com/uploads/1/3/4/4/134472611/dofube.pdfIn PDF document text
    • https://mannoorpally.com/uploads/file/pibinufuguvukasefoge.pdfIn PDF document text
    • https://4-pillar.com/img/file/kezamawafuxefivabutem.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622b2f9c84ab0---voxanalisate.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/netigaxakaxo.pdfIn PDF document text
    • http://sperrincaravans.com/images/file/megobunojuk.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/9944fsnjr5unicf2vfev7pqlia/51772032249.pdfIn PDF document text
    • 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_off00015793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15793 11428 bytes
SHA-256: 751d21f31c6bfa55cd461b36595ab5f19c561476fb73912b01abafc6d1dd5a85
font_01_sfnt_off00017278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17278 18028 bytes
SHA-256: b52a5057982c69b10fd353882ee67e4e5632ec935155ee801d69e035a2ceb583
font_02_sfnt_off0001a153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A153 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1