Malicious PDF — malware analysis report

Static analysis result for SHA-256 af25311a922efe4b…

MALICIOUS

PDF

248.4 KB Created: 2022-02-04 20:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: e447519ea8d4b7ccbf7c487d90dbe5a8 SHA-1: 7530b0e4e886d42c6ab509086d719ce081181e33 SHA-256: af25311a922efe4b3b204f8be43ef85d8737425e2e9ab17fdd1937744499155c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9598

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://norin.co.za/XSRYdR1H?utm_term=distributive+property+worksheets+for+6th+graders PDF link annotation
    • http://ztkammer.at/uploads/file/viwadosaf.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/e349066cc8802237f4b885fbd549cbe1/2741878095.pdfIn PDF document text
    • http://teedinmaesai.com/user_img/file/xovosolarejovivizugakab.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b02720a2a5f---nerilavokemopuvu.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/9366838702.pdfIn PDF document text
    • https://hrmconsulting.biz/upload/files/61886730437.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/161beb67d98fee---taborir.pdfIn PDF document text
    • http://luxlustry.ru/img/upload/dokilirisigavoveremiw.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161536cff815e9---mafasopiwab.pdfIn PDF document text
    • http://sweethomedelivery.com/ckeditor/ckfinder/core/connector/php/uploads/files/dazadusunimevetijisas.pdfIn PDF document text
    • https://uangraja.com/contents/files/36836307153.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160f0dd09adb08---bupipiwuvikinojowisipefam.pdfIn PDF document text
    • http://backupcenters.com/userfiles/file/21352785914.pdfIn PDF document text
    • http://pieseclimaauto.com/files/file/40717394360.pdfIn PDF document text
    • http://yeosingol.com/FileData/ckfinder/files/20211121_E93679696900BE7D.pdfIn PDF document text
    • http://myepres.com/HotelEstimator/userfiles/file/26487394698.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/paparukogakax.pdfIn PDF document text
    • http://9jamail.com/FCKeditor/editor/filemanager/connectors/userfiles/file/67068610713.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_off00037418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37418 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00038b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38B38 11396 bytes
SHA-256: ea829bf9049c8096dbc94a7b7a53c45c37a344e21d01e08d3421e539bb75bd67
font_02_sfnt_off0003a5fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A5FC 17392 bytes
SHA-256: ec883f922f18a7a79c8408420fdccc04731576956b068c61fcd1efb18e4d8984

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