Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c5f561f4ecb1c0…

MALICIOUS

PDF

90.0 KB Created: 2021-10-05 01:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: 17edf0e55921d0ea262cd139b9990024 SHA-1: ac88ec48cac21b839d9e6896cf019a9ebf1e3048 SHA-256: a9c5f561f4ecb1c03c2758f3b56eb8eff44c56d26ad3b4adedc50604b0e22a08
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://maychebiengoduykhuong.com/media/ftp/file/85532783442.pdf In PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613fb04a76e50---ralaved.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161405a390bbdf---42638662210.pdfIn PDF document text
    • https://pinpointfeedtech.com/ckfinder/userfiles/files/65695424923.pdfIn PDF document text
    • https://pensiunea-escape.ro/ckfinder/userfiles/files/radinuxexafafanopasu.pdfIn PDF document text
    • http://isleford.com/filespath/files/20210906192015.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614a0564907d8---53369015257.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/hlsqig2cuut10jvkf7b92gb288/66356470415.pdfIn PDF document text
    • http://tecnoservizi.com/userfiles/files/99142885525.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d0ead927a9---54622210510.pdfIn PDF document text
    • http://hnsunnyfood.com/d/files/46634258379.pdfIn PDF document text
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/gopaxasufijabej.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/16156d96fb0b0e---43958598136.pdfIn PDF document text
    • http://bckvalumni.org/userfiles/file/wutofuximenizimafeto.pdfIn PDF document text
    • https://bliznacite.dvsportbg.com/files/bulixezaxuwuxi.pdfIn PDF document text
    • http://bankerz.in/qpic/files/suvusexelupum.pdfIn PDF document text
    • http://mlsite.gewoozee.tw/custom/file/rawedubusalufof.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16159c64a61c92---40082987520.pdfIn PDF document text
    • http://fongyoskert.hu/userfiles/files/pegevitavo.pdfIn PDF document text
    • http://daisin1977.com/js/upload/files/bamonipisudipigefol.pdfIn PDF document text
    • http://como.gattinonimondodivacanze.it/themes/userfiles/files/nolozulibimefa.pdfIn PDF document text
    • http://urgentcarepb.com/userfiles/file/gapatugazadetuno.pdfIn PDF document text
    • http://prospekt-rostov.ru/ckfinder/userfiles/files/vidazubojekakuxutebel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=mile+swim+times+by+agePDF 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 extracted file (font_00_sfnt_off0000fadd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000fadd.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADD 10460 bytes
SHA-256: 5503653b15a8c634738476f10ac26eadb9805a7799e5308e406b7264e54a0c2e
font_01_sfnt_off000112bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACD 18404 bytes
SHA-256: eca1a3f12a6bd9b8492c2e0d30681206cb2a696ae8c4766e8dbde008ea00bf7a