Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61d38c71a961259…

MALICIOUS

PDF

359.1 KB Created: 2022-03-08 04:29:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: db24336363d759b68703e343580fa5d0 SHA-1: 3b534dd1d73617ac20aa7ab3a41b23677b1f35c1 SHA-256: b61d38c71a961259a82502aa23775e3ab946c2991dd03a9743405b5605585170
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8625

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://yubit.co.za/XSRYdR1H?utm_term=triple+frontier+rating+parents+guide PDF link annotation
    • http://meditopthailand.com/file/wewedeporedisovimeben.pdfIn PDF document text
    • https://farmaciasacoor.com/site/upload/file/28689727155.pdfIn PDF document text
    • http://primaria-ciocirlia.ro/media/file/tubuvuraxufalepaveweguvaf.pdfIn PDF document text
    • http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/15779200271.pdfIn PDF document text
    • http://123flower.doweb.kr/upload/files/foguxakalixoluvixodagu.pdfIn PDF document text
    • https://harryreichert.de/uploaded_pics/News/file/wojigijinobifedototodawo.pdfIn PDF document text
    • https://autodesk-v2.emailingmanager.com/uploads/editor/file/6515616251.pdfIn PDF document text
    • https://dioss.eu/files/ckfiles/file/najofizolunufexa.pdfIn PDF document text
    • https://loyallcanada.ca/editor_files/file/19812280179.pdfIn PDF document text
    • http://jgbt.us/pds/userfiles/files/kolepezutar.pdfIn PDF document text
    • http://porpora.biz/imagenes/imagenes_contenidos///dadezakofesoririnarugon.pdfIn PDF document text
    • http://meguro.pl/www/js/kcfinder/upload/files/zodiw.pdfIn PDF document text
    • https://mehfermobilsaglik.com/userfiles/file/88985741413.pdfIn PDF document text
    • https://indirimlipin.com/calisma2/files/uploads/41285656735.pdfIn PDF document text
    • http://shtaket46.ru/page_edit/_samples/userfiles/files/nibexatemu.pdfIn PDF document text
    • https://www.neoneophytou.com/ckfinder/userfiles/files/topazelojulaxatu.pdfIn PDF document text
    • http://www.santabriganti.org/admin/ckfinder/userfiles/files/bitutagafawaxuziboliwu.pdfIn PDF document text
    • http://thiennhanduong.com/ckeditor/kcfinder/upload/files/rududasuladixebodo.pdfIn PDF document text
    • https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/46501229247.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 extracted file (font_00_sfnt_off000532dc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000532dc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000532dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x532DC 16668 bytes
SHA-256: 11bf5ae4ab07b39098f9804a0289feb97813cccef11ceb9fbec6d5475355b3b7
font_01_sfnt_off00055e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55E15 10736 bytes
SHA-256: f17a1f9b23ca5bf6757a3bfcdc03eac870de5db9caf195e2f04233b1d36dbd92
font_02_sfnt_off0005769c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5769C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9