Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc8fb820d5caa0d…

MALICIOUS

PDF

340.3 KB Created: 2022-03-29 05:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 3571ae552778194db96be90d4d9f1cbe SHA-1: 1bbded306d9bf18353dd7dc34a2814ac678f4e82 SHA-256: 3bc8fb820d5caa0df08a526548fd20858617ee247f08bb44226051f1c98e35bb
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6479

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 http://coopaac.com/assets/kcfinder/upload/files/47570886607.pdf In PDF document text
    • http://themadthinker.com/temp/vinney/HTML/userfiles/file/78857687271.pdfIn PDF document text
    • https://clubledomaine.com/assets/kcfinder/upload/files/kufaxusuwalusobojerowul.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/4049664149.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/getegijililor.pdfIn PDF document text
    • http://moutierrozeille.fr/userfiles/file/siwatitikatoler.pdfIn PDF document text
    • http://look.bio/kcfinder/upload/files/16691160775.pdfIn PDF document text
    • http://kabinet.puzat.ru/marafon/uploads/files/76548661192.pdfIn PDF document text
    • http://gamenavigator.com/userfiles/files/79548331529.pdfIn PDF document text
    • http://conhantaoankhanh.com/webroot/img/files/60423977009.pdfIn PDF document text
    • http://ipsc-pv.cz/kcfinder/upload/files/penifapirir.pdfIn PDF document text
    • https://krainaogrodow.eu/zdjecia/fck/file/muzototuzuso.pdfIn PDF document text
    • http://6461737.ru/upload/files/19701440904_1645285496.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/84556595260.pdfIn PDF document text
    • https://www.escolamacrobiotica.pt/backoffice/assets/js/kcfinder/upload/files/98180796288.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/4846687634.pdfIn PDF document text
    • http://hycxchina.com/filespath/files/20220203164512.pdfIn PDF document text
    • http://rostocker-taxi.de/resources/files/nimarixasag.pdfIn PDF document text
    • https://funstore.dialog.org/userfiles/file/fijirozimoloziparizuzod.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/162219b7ade375---65596627115.pdfIn PDF document text
    • https://isped.cz/kcfinder/upload/files/sapilijukokax.pdfIn PDF document text
    • http://flirtproducties.nl/ckfinder/userfiles/files/79513244672.pdfIn PDF document text
    • http://xn--66-6kc8bfmkmjd.xn--p1ai/admin/ckfinder/userfiles/files/ruzokakijuvutawalakijulo.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=codigos+sagrados+testimoniosPDF link annotation
    • https://aurastaffing.es/upload/file/7267598411.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_off0004d71f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004d71f.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004d71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D71F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004ee3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE3A 20652 bytes
SHA-256: 1e2db2b8ea6bd8121c694a4277d88f37c690f69cd0dc05388ef4d1022d3cb362
font_02_sfnt_off00052255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52255 1696 bytes
SHA-256: 28c5bcedffb0f63c0f18ed07264126f7c833899b916de9a351f9850be7cb6bae
font_03_sfnt_off00052a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A66 10576 bytes
SHA-256: 42436d05e5fdb4ccdc461a8a0175eb3fcac138f15165fe19f7cc5f7e0aa79e27