Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8b4825506a6faa…

MALICIOUS

PDF

87.3 KB Created: 2021-06-27 13:52:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: b1c3dfdc23558e487f28485f7a311965 SHA-1: 63d2c9c712d06054c7a0f03162b3786f294dabe7 SHA-256: 5d8b4825506a6faa065b0c2df8880b9b156116fb0e1ac22564181ace13c37e69
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://julianowka.pl/ckfinder/userfiles/files/92892101373.pdf In PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/defe9cd92198321c0cd04554254ffd7e/sibopikumadus.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/52818549635.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/85571276405.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/wuvavuwovupajox.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/kaudbaibuutb5g8nf3io3k7lhg/65851856941.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084a8a9bd143---wojuworej.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b31084419b---47553503636.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/numujekupufigepizavagug.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/2db808ed540f5d65e83f1cfe8ecfbdd0/69669288790.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d4d38382c3---pamewamagafo.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/sijofipipogozom.pdfIn PDF document text
    • https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/f243474184df29d17100cf597f1f6769/xowikupule.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/459e1167ca4cf074dabaa0082b8d1033/fekanobuwavajopuxo.pdfIn PDF document text
    • http://clearcircleenvironment.com/userfiles/files/robesarefi.pdfIn PDF document text
    • http://tragiaocolamsapa.com/userfiles/image/file/turiroke.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801e3dafcf6---bodojubazimigazasotako.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/6apligssojt24auo8u5i8d0fhe/tevebuzudulesolu.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/fp81i8itdqh30jhle6jt8mqrsa/tojosiforikuj.pdfIn PDF document text
    • http://4seasonstours.in/userfiles/file/3982140701.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/67425dd42231e692d5000c9e21839f76/voxemefutufiwon.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160ad60170453b---mavupefafomavolekiku.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/darenasojifezez.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=mx+player+eac3+audioPDF 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_off0000f026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF026 10620 bytes
SHA-256: 6b183f28e6c77f63874e57ba88e6b7be1780c342ee99daaf9785374bd1a6318e
font_01_sfnt_off00010898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10898 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000120aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120AA 18128 bytes
SHA-256: 50e165688e36447ee47fef6e888bd237af6c8b0b51f8c925c0244488d941bc9b