Malicious PDF — malware analysis report

Static analysis result for SHA-256 19158c2412c1148c…

MALICIOUS

PDF

76.3 KB Created: 2021-11-13 05:55:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: e0b760f29047916033e2c0021adbc772 SHA-1: 752fa3aa83be96295cb9145a4e02c0caf9b10223 SHA-256: 19158c2412c1148c05cc1b898da3e01b7aa5ac359a8a3ea99bd37852d94f1d55
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://milorem-service.ru/userfiles/file/24095144924.pdf In PDF document text
    • http://www.alfapilates.pl/upload/file/dopezovokezexexuxolil.pdfIn PDF document text
    • http://contelex.it/userfiles/files/54442361727.pdfIn PDF document text
    • http://ats-dz.com/userfiles/file/ditudikuruzasidogatu.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130fffe701cb---77866761915.pdfIn PDF document text
    • https://alcc.c-zentrix.com/ALCC/mail_attachments/multitenant-ws-01/1/1630959188.pdfIn PDF document text
    • http://abbeytraining.net/userfiles/file/6017609607.pdfIn PDF document text
    • https://cahayaapi1.com/contents/files/budepukutufaporinijuso.pdfIn PDF document text
    • https://sportnazona.bg/f/uploads/files/91571935721.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/e0a35cecd7d5e3131675e552951681cc/15016416159.pdfIn PDF document text
    • https://smilaxlabs.com/userfiles/files/nivagajivoxunokewaf.pdfIn PDF document text
    • http://thegioimaychaybo.com/app/webroot/uploads/files/20588691350.pdfIn PDF document text
    • http://cdmvt.cz/sites/default/files/larojosivido.pdfIn PDF document text
    • http://ride-on-earth.com/images/blog/file/31693027606.pdfIn PDF document text
    • http://inica.org/files/file///kigojodoseketeb.pdfIn PDF document text
    • http://www.farmaciapenil.es/userfiles/files/20874940825.pdfIn PDF document text
    • https://rafaela-motores.com/userfiles/file/42431180622.pdfIn PDF document text
    • http://agapetown.net/ckfinder/userfiles/files/51974498729.pdfIn PDF document text
    • https://costabravas.com/uploads/localidades/files/pulosipilokogu.pdfIn PDF document text
    • http://ajitcoatings.com/uploads/67338126333.pdfIn PDF document text
    • http://jplus-ag.com/upload/files/BodyFile__614F33479C31D.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137d3372d607---naponubekavuxarivuxomid.pdfIn PDF document text
    • http://redeyeldn.com/userfiles/file/xadusitozijakegirobak.pdfIn PDF document text
    • https://tivirtual.com/userfiles/file/78588478237.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/HTGXzuRVGb4/uplcv?utm_term=quit+claim+deed+mn+examplePDF 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_off0000c41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC41A 18504 bytes
SHA-256: 0c3be8a42afa135f10c0ddacdbd88910bde9bf139fa06ab2f435929510eff93a
font_01_sfnt_off0000f49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49B 10548 bytes
SHA-256: 2ec7e27021ffe0bada15b3e001913c82b9225b1f6a153dbeb2e4193e98911501
font_02_sfnt_off00010cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB8 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef