Malicious PDF — malware analysis report

Static analysis result for SHA-256 1916488946aba587…

MALICIOUS

PDF

70.5 KB Created: 2021-10-04 02:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-23
MD5: b2d2778956810db9246d8210e1465b5f SHA-1: 5f9887b7a485e1a0c56c1cef321e76d9d0715cf0 SHA-256: 1916488946aba58751995f0bfa994b0277906d8ee083670dc91ad69e0b9e65ea
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://queure.ru/uplcv?utm_term=in+modern+taxonomy+species+are+the+most PDF link annotation
    • https://processwork.archerhuang.com/ConImg/files/betorolamewumisoxepox.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/161497898535a6---68461501305.pdfIn PDF document text
    • http://jjteriyaki.iorderfoods.com/uploads/files/34738218632.pdfIn PDF document text
    • http://mvsexpo.ru/admin/ckfinder/userfiles/files/vezinosudisawikobuxab.pdfIn PDF document text
    • https://xn--90aweabvm.xn--p1ai/ckfinder/userfiles/files/97013597725.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161463a6fcce14---76392180132.pdfIn PDF document text
    • http://miskolciharsona.hu/pictures/file/zusigagodopaloletowap.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16157fcfdb23c6---zugadonuro.pdfIn PDF document text
    • http://annabarons.lv/files/files/34570541608.pdfIn PDF document text
    • http://jmlukanich.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/17609424436.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153f116a90e7---fujeluro.pdfIn PDF document text
    • https://vidaleve.net/ckfinder/userfiles/files/fekiwad.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/s0q3tjnb9ph4hecng05oamlp25/59772966325.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021092918030286.pdfIn PDF document text
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/nofelaxixutasasuguzawo.pdfIn PDF document text
    • https://eco-translation.ca/upload/editor/file/5961451616.pdfIn PDF document text
    • http://herium.net/FileData/ckfinder/files/20210905_A2AD5CFC5924B6C6.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/60664588968.pdfIn PDF document text
    • http://yourmoneyyourbank.com/uploads/File/guzemudutelug.pdfIn PDF document text
    • https://lazeo.nl/userfiles/file/makomo.pdfIn PDF document text
    • https://vnnc.vn/img-hdmedia/files/93761895892.pdfIn PDF document text
    • https://www.aledrukujemy.pl/ckfinder/userfiles/files/5186632964.pdfIn PDF document text
    • http://capriololaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/9384816969.pdfIn PDF document text
    • http://faw-asia.com/image/upload/files/4105370118.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613ab0bbee7e3---41113515566.pdfIn PDF document text
    • 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_off0000b24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB24C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ca63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA63 10900 bytes
SHA-256: 173b025067c700353482533822cb79b50ccd2a60be511a795f0f7da3e6930063
font_02_sfnt_off0000e36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36E 16220 bytes
SHA-256: 5e57e51c0de75e75463818f59509223e3646215f3ae246a36f9fce7cb0694180