Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dc62ea74d307bc…

MALICIOUS

PDF

81.4 KB Created: 2021-10-06 03:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 5cc6585bbd58d2e5ccab9660a668a8b0 SHA-1: 72aa5430aab0bbb4dbf824a299a3e5e3e207d328 SHA-256: c5dc62ea74d307bcecff5d165fe34437835b97505642bf6368e58e199d7e184f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://medvor.ru/uplcv?utm_term=diff+between+histogram+and+bar+graph PDF link annotation
    • https://thietbixaydungcantho.com/canthomobile2/public/images/sanpham/files/tilivilufuvixifasedanoli.pdfIn PDF document text
    • https://greenfins-thailand.org/uploads/file/gidikobipenerorufiko.pdfIn PDF document text
    • http://laserinnsbruck.com/static/zegexiten.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/vaxomunigelunasewaron.pdfIn PDF document text
    • https://regionalhealthprogramsww.com/images/file/12301751851.pdfIn PDF document text
    • http://bunny888.com/ckfinder/userfiles/files/xelaromowojotimezegizop.pdfIn PDF document text
    • https://tecnicadovolante.com/images/file/92271956682.pdfIn PDF document text
    • http://tumakuruvoice.com/tumkurvoice/ckeditor/ckfinder/userfiles/files/kelivapojatudez.pdfIn PDF document text
    • https://mintedimages.com/ckfinder/userfiles/files/lojusowisekofofobuvomu.pdfIn PDF document text
    • http://cuacuontoanthang.com/media/file/13442322529.pdfIn PDF document text
    • https://www.prshots.com/ckfinder/userfiles/files/19350520042.pdfIn PDF document text
    • http://www.mezmat.ru/ckfinder/userfiles/files/81270299076.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/c76ee1ee8e631463c3f3e25b7d557edb/tonetafatevit.pdfIn PDF document text
    • http://abw10thstreetne.com/uploads/files/87229074828.pdfIn PDF document text
    • https://mehreganimaging.com/images/upload/files/65622704858.pdfIn PDF document text
    • http://bolt.fo/public_html/userfiles/files/61308810748.pdfIn PDF document text
    • http://www.radio-kum.si/data/files/bajoxabatinimilujolarul.pdfIn PDF document text
    • https://kitapkapla.com/upload/ckfinder/files/livutenijojajikuje.pdfIn PDF document text
    • https://psychologgia.pl/Upload/file/46887573450.pdfIn PDF document text
    • http://fotografiafrancescosomma.com/userfiles/files/21574933716.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/ca70c1b76d5cebd439907eabf1f17adf/28092711536.pdfIn PDF document text
    • http://infoguard.ru/content/file/bofolak.pdfIn PDF document text
    • https://tresonance.org/uploadfiles/39252742806.pdfIn PDF document text
    • https://lyna-garage.lynacarrental.com/htdocs/cljr/data/files/fufikererezakimulotomezoz.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/c6fcfa615f26d2cf54638e080a46d507/89469031347.pdfIn PDF document text
    • http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/4689494277.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_off0000d5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B6 11124 bytes
SHA-256: 42eb3acc6e45ea512e695061a00896960a4bf0120d71b663d614750d0d773053
font_01_sfnt_off0000ef26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF26 18656 bytes
SHA-256: 2981b216794e48aac7235832b99943c49997f2f4ed949056b31b5286d2ab252b
font_02_sfnt_off00011fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1