Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd6cddb09f44fef…

MALICIOUS

PDF

368.5 KB Created: 2022-02-06 16:30:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: d43956e49b7cd3d18e5da7332cec2872 SHA-1: 1b35b5f4acaa3b475c66bc92a289a3c7509225d0 SHA-256: 3dd6cddb09f44fefd2c9a6c97d50991cdb990c01f823711b6c0c4cf8b4dda60e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8829

Heuristics 6

  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://colod.co.za/XSRYdR1H?utm_term=b.+ed+cet+online+form+2018 PDF link annotation
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/161cd91e586c81---zotenugovagevejonut.pdfIn PDF document text
    • https://gkia.org/kingkong/userfiles/files/fakegibovuwapuzubon.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a6624fb5b83---motigubekofitiwopifi.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fba5e3eab87---51526843831.pdfIn PDF document text
    • http://sweatrinserepeat.com/ckfinder/userfiles/files/42037060820.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2021-10-19/20211019175811552541.pdfIn PDF document text
    • https://hatinhjobs.com/upload/files/wawusubakativaxemegibivar.pdfIn PDF document text
    • http://factorycontrolprojects.com/userfiles/file/94388621750.pdfIn PDF document text
    • http://baraanduliaptti.org/userfiles/file/fikejibakop.pdfIn PDF document text
    • http://mottohub.com/multimedia/userfiles/file/49738811440.pdfIn PDF document text
    • http://blueview.nl/app/webroot/files/userfiles/files/52767414047.pdfIn PDF document text
    • http://jcmb.gris-de-payne.fr/app/webroot/kcfinder/files/lafufupelinifa.pdfIn PDF document text
    • https://olterus.net/contents/files/xepexibif.pdfIn PDF document text
    • https://livnica-metalurg.com/images/pages/file/mexukaxeda.pdfIn PDF document text
    • http://rafaelokazakov.com/file/pugijapelafuzi.pdfIn PDF document text
    • http://waxiangyuan.com/upload_fck/file/2021-9-16/20210916003217987896.pdfIn PDF document text
    • http://tyextractor.com/d/files/68216785237.pdfIn PDF document text
    • http://rc-mst.com/mst/_upload/files/88214072551.pdfIn PDF document text
    • http://zs.tom.ru/jsplugins/ckfinder/userfiles/files/fofonuliwede.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_off0005564e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5564E 17112 bytes
SHA-256: 4ce7298d560a0c735bfd49dba327437ad36ea7dd520dcb94c43edccf06828ad3
font_01_sfnt_off00058319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58319 10928 bytes
SHA-256: cbf105ce2c56a038a46f1f21e4d449762577dd1e9685f8fe8473f86b49770fc1
font_02_sfnt_off00059c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C75 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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