Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c815cd90bfcead4…

MALICIOUS

PDF

77.1 KB Created: 2021-11-13 04:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 7e5ddc8b3ddfdd8eabc83eda2738bfc1 SHA-1: b9be3b664a04f33d2baa85c0805f1ba55dd1e966 SHA-256: 2c815cd90bfcead4efedb6a30ca2487150426623853963d4087f0d58617fa310
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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://thsport.dk/ckfinder/userfiles/files/wusoj.pdf In PDF document text
    • http://blackhorsesc.pl/userfiles/file/8715983987.pdfIn PDF document text
    • https://rmp-traueranzeigen.de/cms/files/85724218345.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/161637981e3a68---fukokawaxelapemilamomup.pdfIn PDF document text
    • http://permagnet.com/upload_files/file/210924202920891662gsp6s9.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/1726bcdcd8bc11f425be83ed7d04d863/96819059395.pdfIn PDF document text
    • http://laserbeautymachine.net/d/files/gogeluxiravafuduvawup.pdfIn PDF document text
    • http://everestlodgelukla.com/userfiles/file/1146888267.pdfIn PDF document text
    • https://noithathoaphat11.com/upload/files/68640730437.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615ae6f7bd1aa---82726967438.pdfIn PDF document text
    • http://gldbirdgel.com/user_img/files/35719085863.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614cd7a95d660---42869170705.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/ac623290cea9aca6e8d8cdcd034add1e/fawugikuzinebogofodumipiw.pdfIn PDF document text
    • http://apsencollege.org/test/fckeditor/file/vuzevowojabulefodaxezufu.pdfIn PDF document text
    • http://www.cartes-blister.com/img/uploaded/file/53525965045.pdfIn PDF document text
    • http://kapsalonindex.nl/images/uploads/71878156913.pdfIn PDF document text
    • https://durgabas.coop.np/ckfinder/userfiles/files/xowibifewu.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/96287088766.pdfIn PDF document text
    • http://mosvag.ru/img/lib/file/10835754004.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/titomo.pdfIn PDF document text
    • https://globalathena.com/ckfinder/userfiles/files/moxumewakija.pdfIn PDF document text
    • http://gotoippc.com/ckfinder/userfiles/files/3024342850.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/d5b398788e7559791780b85b0dac93fb/xixetezex.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/cs9c7ieobh6qfv0r6cm1k4d6b3/47215945292.pdfIn PDF document text
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/fotefosijene.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/5bhJmFgkeCE/uplcv?utm_term=cost+of+genome+sequencing+2020PDF 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_off0000c91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC91E 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_01_sfnt_off0000e044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE044 10888 bytes
SHA-256: f25aa24a6751cf0a67128bbf3543afc64f56795dea2ba9de6375a8ed3d4456da
font_02_sfnt_off0000f936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF936 17612 bytes
SHA-256: 4f1c5e527c6487e693f7ea2e3349e6980320baf8ec16f57bc80ed19e78c6068e