Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b8534bf6c4c542…

MALICIOUS

PDF

414.5 KB Created: 2022-03-19 07:22:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-03
MD5: f4e464afb0ed5550a9e8e0e904f809b7 SHA-1: 0327479d276995abfbad4c178b016d4f04407250 SHA-256: 22b8534bf6c4c542f9da0424807db8c3fb4480af94fb672e8411b5efa30a1238
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8433

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://wirut.co.za/XSRYdR1H?utm_term=mridangam+music+free PDF link annotation
    • http://tech-sub.com/userfiles/file/bixunujufuvuxufabiwab.pdfIn PDF document text
    • http://tsnpharma.com/upload/files/lebawetikilijojusosabide.pdfIn PDF document text
    • http://thepducphat.com/upload/files/wifewafi.pdfIn PDF document text
    • http://st-johnson.com/Uploadfiles/files/wakuvuvedoku.pdfIn PDF document text
    • http://cmtoolsrental.com/user_img/files/6614457226.pdfIn PDF document text
    • http://emirates-offshore.com/uploads/image/file/sarobomid.pdfIn PDF document text
    • http://www.salda.lt/saldus/kcfinder/upload/files/49449340000.pdfIn PDF document text
    • https://kenhquangcao.vn/uploads/files/32930592607.pdfIn PDF document text
    • http://yyfxsw.com/upload/files/23070204992.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/604c58e65ed49c45657b2f8180f36e61/65131328571.pdfIn PDF document text
    • http://inter-travel.hu/_user/file/merepexizajuxezabudawexa.pdfIn PDF document text
    • http://poorclarescork.ie/images/95986539517.pdfIn PDF document text
    • https://movie2book.com/userfiles/file/76570793099.pdfIn PDF document text
    • https://istanajp2.com/contents/files/rejadolojum.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/jqkurh5eeklf2807qkq92mf7ge/7768988702.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_off000601e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601E1 22724 bytes
SHA-256: f66ac1975f308a645c11289fdf9b79563442a6560e55cbeea81d452e187372be
font_01_sfnt_off00063d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D12 10648 bytes
SHA-256: 731da798f7f8405f93ef0475c713391f7d6031bffb0be717da0ebd041519436d
font_02_sfnt_off00065535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65535 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9