Malicious PDF — malware analysis report

Static analysis result for SHA-256 1824561cfbaed5c3…

MALICIOUS

PDF

78.8 KB Created: 2021-06-23 06:37:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 90944a93ccb481351a049360ba86438a SHA-1: 3e59f89eb518d9aeb30e509424aaef83749b0b28 SHA-256: 1824561cfbaed5c37a278145d5d4e749a67042aa1b26b11053cbfedbdfb9af4e
98 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV scan did not complete info CLAMAV_SCAN_INCOMPLETE
    ClamAV scan on this file did not complete (ClamAV error (exit -15)); the verdict reflects only static heuristics. The result is not cached so a later submission will retry the scan.
  • 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://asharfilalkulfi.com/ckfinder/userfiles/files/69355376308.pdf In PDF document text
    • http://auxerretv.com/content/public/file/tafuje.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810660a5a93---60480315013.pdfIn PDF document text
    • http://sskj.pl/userfiles/file/pomunadovirilivovesavika.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160868f7780b40---nomekejezeduzeluronilek.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/f3aa54b0c30657e49dc285fe473082cb/roderegoron.pdfIn PDF document text
    • https://aashianarealty.com/file/95457938166.pdfIn PDF document text
    • http://abwingssuffolk1.com/uploads/files/gimamavunos.pdfIn PDF document text
    • https://capitalsyndic.com/userfiles/file/nijizirevaf.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/lijerabomegafot.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897327bb266---wunavelujed.pdfIn PDF document text
    • https://fiscalonline.eu/app/webroot/files/userfiles/files/33849824655.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/b533fedf0364422ceb28576aadd00f9d/56551566280.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b38945c7c8c---73257714104.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2aa94f2d4f---nebatusajubesete.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/fonorepukazipofakipo.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/67cd17b8f95199b15a64eb4346914a85/wanotigodu.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/65619248043.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/FevRqgeaUVY/uplcv?utm_term=farm+island+mod+apkPDF 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B7 5124 bytes
SHA-256: 33425a666474d3785a34fb9194ebbdd2a33617e7e36dfd1d88ff889112899345
font_01_sfnt_off0000fb0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0D 23388 bytes
SHA-256: 0e9ef1bd86d21b0bfc159a88eccb6f37462e1069220baf000a4711e11a076427

Open this report in the interactive analyzer, or submit your own file for analysis.