Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b63e3f876bbd4be…

MALICIOUS

PDF

79.1 KB Created: 2021-08-25 04:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: d731ea9cd192edd8b628a6b29e6d51d6 SHA-1: 921cee8b5923d9e72423c09d5fcf566a55303caf SHA-256: 2b63e3f876bbd4be57f329ea89b014989d8311e52bcbd0e20b5a2e95249c3ad3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://pixomot.ru/uplcv?utm_term=excel+2013+the+missing+manual+pdf PDF link annotation
    • https://chuyennhakienvangvn.net/upload/files/61725900071.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/32849794717.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/c504c71877ddd7a9b61b6cb3922ce508/vidorokem.pdfIn PDF document text
    • http://norilskgu.ru/userfiles/file/jiriranedame.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/51e1de4268fbe6d3a45b3972e4de8234/lofuzeremilamizetezumi.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d5a1e5618---2105507314.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/77992443955.pdfIn PDF document text
    • http://niengrangchuyensau.com/upload/contentFile/file/sedija.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/75c94eb2c93ded0cb7de20a432315833/18080968062.pdfIn PDF document text
    • http://worshipedia.net/sites/default/files/file/gitalaxivepagizujevugawas.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/eqjmp8b9s6514a36p46tco5lte/73085322790.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf3518358c.pdfIn PDF document text
    • http://ebiocell.com/uploadfile/file///2021071304515918.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb2f901d90---13176445781.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/bikefapotituzoxozoloxasi.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ed7752034d1---mitedexok.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608efe1d5306e---42018002645.pdfIn PDF document text
    • http://kruengrangthai.com/files/files/ripifasizik.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ed783a02345---geratasisiligatuvol.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/28783038973.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0ce70dc2a---fixomusepifo.pdfIn PDF document text
    • http://huijingweb.com/upload_fck/file/2021-8-16/20210816225300781664.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_off0000cf5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e76c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76C 17144 bytes
SHA-256: 21161f2afd9bbc4fbbf6343b48ffde7aeac0da8170b1f82df145a3150de72763
font_02_sfnt_off000113e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E6 11496 bytes
SHA-256: 6a9f11a0ebeaf91dcdca1b413e230377e7633085271590e31d8b76d5171d2d83