Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f8e450771bcf71…

MALICIOUS

PDF

301.4 KB Created: 2022-03-03 21:31:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-01
MD5: 79ee24366cd90552f61e405b4840aea8 SHA-1: fdbc712eb97014c1ab713e575f60a2fc5f64f507 SHA-256: 89f8e450771bcf71cd93904d60250b70d7c91d297f1842e932668d80e06223b8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9032

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://cafij.co.za/XSRYdR1H?utm_term=chalkboard+ppt+template+free PDF link annotation
    • http://iwilldoit.ru/uploads/files/files/42288911614.pdfIn PDF document text
    • https://ashasuchikala.com/ckfinder/userfiles/files/79756259921.pdfIn PDF document text
    • https://mayphoviet.com/media/ftp/file/jipeketokisanuxiwomo.pdfIn PDF document text
    • http://adbrf.com/files/fckeditor/file/976462009620e987f7c22f.pdfIn PDF document text
    • http://kindergartenhelden.at/upload/file/22979652388.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/8918aec9a31ce3758364acb1c86701dd/lisaru.pdfIn PDF document text
    • http://locnuocvietmy.com/Images_upload/files/vobetesokomasupivep.pdfIn PDF document text
    • http://bwa.olsztyn.pl/bwa3/admin/kcfinder/upload/files/votowipoziraz.pdfIn PDF document text
    • http://chupanhnoithat.vn/upload/files/tafiwifufaxumudesapoku.pdfIn PDF document text
    • http://awkontrakt.pl/ckfinder/userfiles/files/bojajonefibesadakudifu.pdfIn PDF document text
    • http://atlantidaagency.com/kcfinder/upload/files/gisogus.pdfIn PDF document text
    • https://bike-accessories.supersites.gr/content/ckfinder/files/78705054911.pdfIn PDF document text
    • http://islenapuntos.com/campannas/file/4772839449.pdfIn PDF document text
    • http://chukgoobok.com/files/fckeditor/file/76478443145.pdfIn PDF document text
    • https://ebus.myskoolapp.com/FCKeditor/FCKimgUpload/file/megafadawu.pdfIn PDF document text
    • http://itagqatar.zajeltel.com/itag/file/files/5893053184.pdfIn PDF document text
    • http://embauchecadre.com/kcfinder/upload/files/67035102365.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_off00044f4f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00044f4f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44F4F 15804 bytes
SHA-256: 15ff7f158e663f75ea07975438692f53eb42287a2f5f63fbf04d3948d0f61e90
font_01_sfnt_off0004779a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4779A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00048eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48EBA 10664 bytes
SHA-256: 9af5955da2e364e73925c2cba9861c7bd4335680eff5b9c20b6e796b4d962f15