Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b594bf17f53e37…

MALICIOUS

PDF

92.2 KB Created: 2021-06-18 13:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 5cd5ce480e4e56b445bfe325bce81899 SHA-1: dbb9792fed9f50a701d2b836aaa4d4eb35af26e7 SHA-256: 72b594bf17f53e379208bdeb467a1645b809111d1bdfce518732594a389d5bee
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/1l2lrog8q46lnva4h9btu657iq/futarevifenuvi.pdf In PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/77b700df0a65d9fbad205cb268609853/kotorofavotovoxi.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/864e61fb4451f504b74cb3bc79346b18/dodaleg.pdfIn PDF document text
    • https://client-sms.com/ckfinder/userfiles/files/wenarabigifunanuxek.pdfIn PDF document text
    • https://ltssinternational.com/res/wysiwyg/file/bepegewo.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f680eb46b3---govenatif.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/47913786553.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/90jqidk36imjkdpfqd1jua2uph/vetel.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe890c7338---63437814208.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080fb20a9561---nafuragelesefelulore.pdfIn PDF document text
    • http://christopherdallo.com/file/10023147868.pdfIn PDF document text
    • http://skyfestival.kr/ckfinder/userfiles/files/pizabalobekatirirafalad.pdfIn PDF document text
    • http://www.kymkarajok.net/tiedostot/files/5931287089.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f8bad6808---33022027960.pdfIn PDF document text
    • https://arch.ua/ckfinder/userfiles/files/sibuzowapovadivedufar.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/jd2m6c5hl7s40dvktieupfu08t/figulod.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/10014c62d45a82bb33e01e4b80da06de/gejilejesefukejadomis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=stardew+valley+best+multiplayer+modsPDF 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DD 5600 bytes
SHA-256: 0a380730ee2ef4bd38b65fcd43a83f735fefd255afb7d9b5db23f3a69bd5d29b
font_01_sfnt_off000115e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E3 6724 bytes
SHA-256: 6cc4444545c81869feb66f63d8d961b8a679f3ca2d04ea69e2451fb78c4e9574
font_02_sfnt_off0001228c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1228C 12188 bytes
SHA-256: f6a9465dc767bf4f37b75dd2c69d686b7099e559ab682ebe8e1b40b4bfdd2f81
font_03_sfnt_off00014b95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B95 16220 bytes
SHA-256: 43045975290c6543a427d63c993c871ff150961e956544c4087304e6f7dee035