Malicious PDF — malware analysis report

Static analysis result for SHA-256 4252b8b2c3cd4253…

MALICIOUS

PDF

82.1 KB Created: 2021-11-19 10:17:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: f69a270f9f7c9d4bafde8879cfbb0cfa SHA-1: 24274af2c062af36e3bd98a1ed6869dd5dffe5dd SHA-256: 4252b8b2c3cd425304a690adc4bc121c303da9dee030fb953a4cf9bc43ede414
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://ketchas.ru/uplcv?utm_term=alexander+the+great+last+3+wishes PDF link annotation
    • http://e-restauracion.com/app/webroot/files/uploads/files/vivuzexatixeraworow.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210916032914634132ebg5f6.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/55753442f946a9e74d0ff232581c2051/45664877679.pdfIn PDF document text
    • https://spotiverify.com/ci/userfiles/files/72672621345.pdfIn PDF document text
    • http://archifolder.com/userfiles/files/45748538554.pdfIn PDF document text
    • https://brod-plovdiv.com/images/21055208452.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/35706959349.pdfIn PDF document text
    • https://stiglic.sk/userfiles/file/95875664289.pdfIn PDF document text
    • http://gift-founder.com/archive/upload/files/75849939650.pdfIn PDF document text
    • https://laatjehuisweerstralen.nl/upload/file/jutasa.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/161797dc181e2d---demaderinavumuzozox.pdfIn PDF document text
    • https://inprovitecuador.com/ckfinder/userfiles/files/kaxatekaseturudumarogi.pdfIn PDF document text
    • http://rothemtour.com/FileData/ckfinder/files/20211101_F12E69F16F075BB8.pdfIn PDF document text
    • https://surupaceanu.ro/ckfinder/userfiles/files/69891570145.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/5cf6dbc9f2eb43705b120bfc821d7819/32895894454.pdfIn PDF document text
    • http://tc-muehlacker.de/data/tcmuehlacker/userfiles/file/62804641408.pdfIn PDF document text
    • https://bolahijau.com/contents/files/83133947720.pdfIn PDF document text
    • http://ingore.cn/upload/files/13053159273.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/01hf0e76bi4sd08i7jqnr6e3hf/23225630105.pdfIn PDF document text
    • https://mk-promotions.com/ckfinder/userfiles/files/61682852555.pdfIn PDF document text
    • http://abwingsva.com/uploads/files/danubetoz.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/xebezinexu.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/jefifunonedezo.pdfIn PDF document text
    • https://izr.fr/files/27836605038.pdfIn PDF document text
    • https://rubyyadav.com/nbloom/fckuploads/file/4678091835.pdfIn PDF document text
    • http://nusratali.com/userfiles/files/130898694.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_off0000da97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA97 18540 bytes
SHA-256: 9fde5db836335d0d53ee66a6102c335cda706c33e744502db013572e506110c2
font_01_sfnt_off00010ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB9 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_02_sfnt_off000121df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DF 10748 bytes
SHA-256: fb82cec8985a086b1ea228b170cd6d497785ca3060c045b578b9b5c3422c06d0