Malicious PDF — malware analysis report

Static analysis result for SHA-256 4456daf596b1be64…

MALICIOUS

PDF

85.4 KB Created: 2021-07-07 09:55:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: 89385eb866660ce1a59099c542ae3136 SHA-1: 94772222b592a1c1f6d41c1b0fecdcaaf357899b SHA-256: 4456daf596b1be64ce274477458e6520ce97806d01ed40c58145d078a98bfe03
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://addsfly.com/userfiles/file/gesiwituwotigifimop.pdf In PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c1124fac621---batolukotebimi.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160d329293974a---12113100880.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/pf4v5l7d9g2n9r2b3t8ulid2sm/71881562589.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608204922e7f1---66350387883.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/ttlr1cvemrmfo9v9or0n29rh2l/rimadupotedobaxobetuz.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/e69b6343be7025040e7651d514d8f0ef/71236381880.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a5707ce2e87---wuxuxopusurirowima.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/3r9vn3ua1qf7pm3gdu039qrtbo/digidisikarebibadivulumob.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bcdfc51d6d---30030334464.pdfIn PDF document text
    • http://malopolskiszlakwinny.pl/upload/File/lelepigejukezepugefujiji.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/d71a81942e3f0f875586aed961946228/42140686187.pdfIn PDF document text
    • http://catherine-massage.com/ckfinder/userfiles/files/55105392606.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/wewibabalebuxisotojefumot.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/h52fus814reeg0if8i9jfdmkk1/89807390506.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/putaxuzi.pdfIn PDF document text
    • https://saatyapi.com/upload/ckfinder/files/valepunasugupigirutoj.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/8q4k8neq5srtuc8ktl1h9ng8j6/vikevefeperefodukig.pdfIn PDF document text
    • http://odesignlab.ru/admin/ckfinder/userfiles/files/pabufazajavo.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/ec5706f8f7ef11401330e0f2958b754a/zefobazateranimogu.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/4f3d7009f5d13f9544d1482e491248e4/23943851889.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b29b74ed4dc---79291964691.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/ce2ca3e812fde9cc162782660cfda909/13570030329.pdfIn PDF document text
    • http://juha.be/_files/file/75586201821.pdfIn PDF document text
    • http://slp70.com/clients/873855/File/rabenagizisuvuxajigunesi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=oc+clean+sweep+chimney+servicePDF 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_off0000ec46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC46 10712 bytes
SHA-256: 352681fcc373b4a180042b229ec526926340c08e5661f2090ef4402e498a3687
font_01_sfnt_off000104bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BD 16804 bytes
SHA-256: d3170a4718b7e9bf9cf9405809060b4036718cca01a1147ec01d169c6cdc456a
font_02_sfnt_off00013055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13055 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1