Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b61bb5bedb17f1…

MALICIOUS

PDF

346.3 KB Created: 2022-03-03 13:33:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 2544a5906130b134d5bb06bc1e124ae1 SHA-1: b1287940552fc6ac2abe6fca706f0c2d8ae15823 SHA-256: 88b61bb5bedb17f1b5944df9f75085338056689ae6aeb05707c03838aa3fb90d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9109

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://ragaz.co.za/XSRYdR1H?utm_term=after+effects+2017+manual+pdf PDF link annotation
    • https://cicadit.ro/UserFiles/file/84513719582.pdfIn PDF document text
    • https://5points.com.ng/5points-admin/kcfinder/upload/files/1145366215.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/pojabobizogudisoribud.pdfIn PDF document text
    • http://private-dev.cliczone.fr/upload/userfiles/files/sipewatitofom.pdfIn PDF document text
    • https://kattliv.com/kattliv/admin/userfiles/file/24936970202.pdfIn PDF document text
    • https://www.iccis20.scrs.in/kcfinder/upload/files/majimudigo.pdfIn PDF document text
    • http://adbrf.com/files/fckeditor/file/419608459621cb9cb37e78.pdfIn PDF document text
    • https://intekcanada.com/ckfinder/userfiles/files/dowepetaduwigekobasef.pdfIn PDF document text
    • http://www.ak-kresy.pl/newsysn/kcfinder/upload/files/36374188132.pdfIn PDF document text
    • https://divinehm.com/ckeditor/kcfinder/upload/files/kodawajutazufo.pdfIn PDF document text
    • http://contua.org/userfiles/file/toravofoxuxu.pdfIn PDF document text
    • https://ap-qatar.com/userfiles/files/kameradaxoled.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1621bd556ea7df---11722953045.pdfIn PDF document text
    • http://meimagedance.tw/ufiles/files/98174442604.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_off0004f826.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004f826.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004f826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F826 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00050f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F41 19032 bytes
SHA-256: 1699665aa11ebf044a359e3fd41aa585fa2de5e813af198595441e68a6323406
font_02_sfnt_off0005418e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5418E 10996 bytes
SHA-256: f8d2adfab2a02b0add7c66e776c7e42f03341720e6e56fd1ca3bc092967b724d