Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e37415fd89cc50f…

MALICIOUS

PDF

82.1 KB Created: 2021-10-06 01:08:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: fe22c4ae54faea047738fc74379d7265 SHA-1: 050c8b0fbd5ac9a8b11b24c876288cdedb76389c SHA-256: 4e37415fd89cc50f8419a10878a2c5b9a8d4497ba1960d39849baa94b9effdbf
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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 http://fotofolliasanlazzaro.it/userfiles/files/80745074795.pdf In PDF document text
    • http://logistra.fr/ressource/site-image/files/70372398310.pdfIn PDF document text
    • http://xenangheli.vn/public/files/4576905264.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2021100504235689.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1615a9cf8eeaf1---11594209642.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/470d30d6de24bfde6b425d91cd0226ac/soxixotijobodol.pdfIn PDF document text
    • http://aodaiminhhanh.com/app/webroot/uploads/files/26110760714.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/b8e82b3251a4da336deca6e5def40ff2/kikipupeked.pdfIn PDF document text
    • https://italvaping.com/file/84692969429.pdfIn PDF document text
    • https://matras-matrasych96.ru/admin/ckfinder/userfiles/files/72027573773.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/ub41rhnqgtqdfunfr970d17bn5/lewafijunitizelokavinux.pdfIn PDF document text
    • http://e68momo.com/shopadmin/upload/files/92042630523.pdfIn PDF document text
    • http://bjsixiang.com/jingkelun/userfiles/files/20210924065437.pdfIn PDF document text
    • http://nicenpos.com/userData/board/file/18242232375.pdfIn PDF document text
    • http://bbu.vn/Images_upload/files/jazuwaruzufizesido.pdfIn PDF document text
    • http://dongamold.com/fckeditor/upload_files/file/11966439887.pdfIn PDF document text
    • https://sharedsynergy.com/userfiles/file/32930243436.pdfIn PDF document text
    • http://santamariamikado.com/uploads/files/68956365617.pdfIn PDF document text
    • http://tvtamminhphat.com/uploads/userfiles/file/49484225077.pdfIn PDF document text
    • http://schodylux.pl/userfiles/file/97434577348.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614972ce7d02d---gefegosewe.pdfIn PDF document text
    • http://zkqzl.com/uploadfile/file///2021090522142872.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/fivadagi.pdfIn PDF document text
    • http://bridgestone-ice-cruiser-7000.ru/ckfinder/userfiles/files/memunegijejobute.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=most+common+site+of+lipomaPDF 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_off0000da62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA62 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF274 18364 bytes
SHA-256: 0af481a4fedc44c137ecd16efe65dce8335bdb63a5d9664cd546987dc883bfe1
font_02_sfnt_off000122c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C1 10532 bytes
SHA-256: 31eb402cb423effd8a49f5c4d14100194c19062e2ca697a60334e641c98eba10