Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8b300e21cb1d2a…

MALICIOUS

PDF

91.7 KB Created: 2021-09-04 06:18:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: b255dd191d49609695a9a81846a784a0 SHA-1: 05f4af69a79f8f7ed4a414ad695357c53dffb811 SHA-256: 5d8b300e21cb1d2aa1134477b252e9b7a22ed08cd80a5930b4e8ef117353bf3e
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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://detector-billetes.com/Imagenes/file/98907466907.pdf In PDF document text
    • https://krossi.ru/images/content/files/ligugidori.pdfIn PDF document text
    • http://dancingstarsgreenwich.net/clients/1/10/10f73e4104fe6082999c9b722aa65ba2/File/11938702592.pdfIn PDF document text
    • http://synhbio.com/upload/files/xupovabod.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/13d53532956e200668adf6dc86c1328b/10261900556.pdfIn PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/vexor.pdfIn PDF document text
    • https://avflash.nl/upload/files/30037586977.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0686916f8---29297371830.pdfIn PDF document text
    • http://zhfangyuan.com/uploadfiles/files/38951140897.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/takofudozewosowubabosi.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/fovajolelopumarosesife.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/0ced4426796633659752894f2542e582/penuvugas.pdfIn PDF document text
    • http://pc-driver.ru/userfiles/files/69145438295.pdfIn PDF document text
    • https://www.champagne-auge-dascier.com/ckfinder/userfiles/files/83210412046.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/a756b14855a71f8a7b95228cd2400ffb/10659628266.pdfIn PDF document text
    • http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/69774465465.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/32710989797.pdfIn PDF document text
    • http://studio-orlandini.com/userfiles/files/pekobejomuzevo.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/wibagakolul.pdfIn PDF document text
    • http://juliesfundforkids.com/clients/d/d6/d6f17a7a4e9d342a12f8f8eeddb80b2d/File/xetenifurofekebiseseko.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/94a0b2bf8f86ceb683c7b4d046d8f0ee/71907803001.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16096170fbbb0b---zokomufazo.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611de3b8f3efc---82058429053.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/iavappvrfrlrem55k5hi25uils/zimidivewuvalefiwoz.pdfIn PDF document text
    • http://zaragozalawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/10338846656.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1f5qbr2s4ul38c1kvqo0ep45t6/80526691587.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=alan+turing+enigma+pdfPDF 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_off0000fe95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE95 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000116ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116AC 10636 bytes
SHA-256: db30ac23d7305ba113f3deb52cb5fb234934076c7938e611f46b503f979c11ba
font_02_sfnt_off00012ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EBD 19352 bytes
SHA-256: d11693c47510b4d926258dba650a80a972ee34155589269f3010546f210d2d30