Malicious PDF — malware analysis report

Static analysis result for SHA-256 6244eab341d457dd…

MALICIOUS

PDF

78.3 KB Created: 2021-12-13 13:05:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: 635b2d20d9c6e9c0be7645a11d7ef1ee SHA-1: 5725226460c52788e2c29912b0a7d68befb6301c SHA-256: 6244eab341d457dd4b89141ee68438e85531a6b37e81386f5a4a5dd7a45af883
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 https://3rproject.eu/ckfinder/userfiles/files/51185786640.pdf In PDF document text
    • https://hilanguage-com-tw.triangle-design.com/files/79895333123.pdfIn PDF document text
    • http://tt-ural.su/admin/ckfinder/userfiles/files/vipekawaxor.pdfIn PDF document text
    • http://daiquangsico.com/img_duhoc/files/semisovuruniviz.pdfIn PDF document text
    • https://magnettoptan.com/upload/ckfinder/files/108278691.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/161699ae22b416---12630235117.pdfIn PDF document text
    • https://robert-zauer.cz/userfiles/file/ledifulo.pdfIn PDF document text
    • http://cgpharma.in/cote_dor_import/admin/ckfinder/userfiles/files/43138428718.pdfIn PDF document text
    • http://graviroz.hu/ckfinder/userfiles/files/79242997068.pdfIn PDF document text
    • https://netcsemege.elelmiszer-hazhozszallitas.hu/ckfinder/userfiles/files/golegil.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/1154414825613e44c58f19f.pdfIn PDF document text
    • http://nwmanagement.ru/generic/uploaded/file/liposifibodafewur.pdfIn PDF document text
    • http://defhjdrjioo.friend-match.com/upload/files/sososeloma.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/161584be887590---4058671672.pdfIn PDF document text
    • http://qdxqw.com/uploadfile/file/13068448297.pdfIn PDF document text
    • http://l-max.ru/userfiles/file/mugaburel.pdfIn PDF document text
    • https://digireg.lu/upload/tekumivesajef.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/fezoforabuzikozo.pdfIn PDF document text
    • http://becskeicsodajo.hu/admin/fck_upload/file/40489672381.pdfIn PDF document text
    • http://indel.sk/userfiles/file/lowafekafedupada.pdfIn PDF document text
    • http://barefoot.pl/userfiles/file/buzotiromi.pdfIn PDF document text
    • http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/76479659695.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/daa02976bcca887f703e95e88172b3c0/lifenedebesoluwosog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RhDyTiV0TgQ/uplcv?utm_term=how+to+take+apart+a+maytag+bravos+washerPDF 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_off0000c74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC74F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000ddee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEE 19784 bytes
SHA-256: 546aa1675d65af966b8c2a88aec69dbc376a731249d004b70b89745614d5cc52
font_02_sfnt_off000111be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111BE 10948 bytes
SHA-256: 998c0b205f4881ed66037bc896f3325140700832415e447528160722b6e2c8c9