Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61b45f03f5a8024…

MALICIOUS

PDF

442.0 KB Created: 2022-02-27 20:48:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 81190b6751b758fa9848d0fb7f40c202 SHA-1: 3006f467526e049cb9e9c50be3279af1217bcdba SHA-256: b61b45f03f5a8024560acc577e43e6bfbe439ed20a811196118957c3929cefab
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6932

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=kerala+psc+lab+technician+questions+answers PDF link annotation
    • http://tianlanlawyer.com/filespath/files/20220113114841.pdfIn PDF document text
    • https://isabellepieman.com/userfiles/file/liregegenifanuvi.pdfIn PDF document text
    • http://carrasvilla.es/uploads/files/99429956706.pdfIn PDF document text
    • http://searchlinkserver.searchlink.org/userfiles/file/46194658915.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4ibci7h72cuphvv13jpf7v4uu7/68428521268.pdfIn PDF document text
    • http://rrarental.org/upload/file/zazejijapilekuti.pdfIn PDF document text
    • https://noddy.nu/images/file/27914380741.pdfIn PDF document text
    • http://dulichtantai.com/files/uploaded/files/89412497040.pdfIn PDF document text
    • https://santaclara.com/wysiwygfiles/file/91370549828.pdfIn PDF document text
    • http://fiumaradelsossio.it/userfiles/files/57500561015.pdfIn PDF document text
    • http://lorichphoto.com/pictures/file/38621014937.pdfIn PDF document text
    • http://anticacarsulaeborzoi.eu/userfiles/files/saguriponuxirilanuni.pdfIn PDF document text
    • http://good163.cn/Uploadfiles/files/wevabekuxugejemetiruxu.pdfIn PDF document text
    • https://birudongker.com/contents/files/26063315175.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616aa65584bbb---38863848848.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_off00067173.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00067173.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00067173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67173 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00068893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68893 10932 bytes
SHA-256: 79710dbd29e83028ef4f20f47f93dfc9a93d0bab220df7f9088b0df58f21b49d
font_02_sfnt_off0006a1ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1AD 21312 bytes
SHA-256: 57e79ae62bfbfa78c0a5d65feea038fac9cf26718eb6a4a5b9cb84893f567b0a