Malicious PDF — malware analysis report

Static analysis result for SHA-256 25cb6835868e3eeb…

MALICIOUS

PDF

411.0 KB Created: 2022-02-26 13:36:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 15958b9e08030bd4ee2330b4011556bb SHA-1: 6e619e19aafd68e48fd33cedcbcb3303e83eeec3 SHA-256: 25cb6835868e3eeb8c36a01f0a258662bb6d1f897cd793f7f9d5990ff41f0a4e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6037

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://lovig.co.za/XSRYdR1H?utm_term=bbc+iplayer+radio+android PDF link annotation
    • http://pronobile.com/catalog/file/99814592062.pdfIn PDF document text
    • http://straps.by/ckfinder/userfiles/files/xulokagizejefatugudifevup.pdfIn PDF document text
    • http://ldbell1965.net/clients/85689/File/21256382427.pdfIn PDF document text
    • https://zerling.eu/nico/images/files/xubabu.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/4db8ba7476c8fb70ecd5330700b6b2cc/66513182823.pdfIn PDF document text
    • http://k2plusinterior.com/userfiles/69587006376.pdfIn PDF document text
    • http://ger.versa.ru/documents/files/37127413305.pdfIn PDF document text
    • http://aodaibooking.com/FileData/ckfinder/files/20220206_94D8E07C3C603CE8.pdfIn PDF document text
    • http://loscogliodifavignana.it/userfiles/files/dukekitanuwexobesebizawag.pdfIn PDF document text
    • https://apoiotelecom.com/imagens/img_fckeditor/file/51178198105.pdfIn PDF document text
    • https://myclubowners.travelenvogue.com/userfiles/files/lobureve.pdfIn PDF document text
    • https://srinivasagroup.com/ci/userfiles/files/53290266901.pdfIn PDF document text
    • https://exporoaster.com/app/webroot/files/images/pages/files/dusezarokopemuxuruguk.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620d937423a68---vogatuzomiwunixelawubika.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/76a02f5a3e8bd996ceeb3e851f67c6e8/43333724894.pdfIn PDF document text
    • http://yevres.fr/ckfinder/userfiles/files/89971372178.pdfIn PDF document text
    • https://bcm.es/files/galeria/files/13550998161.pdfIn PDF document text
    • https://samsungklimalar.com/upload/ckfinder/files/pijop.pdfIn PDF document text
    • https://vnycc.com/userfiles/file/54795273483.pdfIn PDF document text
    • http://casaledellasignora.it/userfiles/files/12722246812.pdfIn PDF document text
    • http://www.upratujemeinak.sk/admin/ckeditor/kcfinder/upload/files/jolasumetojelegebo.pdfIn PDF document text
    • https://www.nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/72971519680.pdfIn PDF document text
    • https://frischgeschluepft.de/kcfinder/upload/files/78033894732.pdfIn PDF document text
    • https://qfuse.it/images/uploaded_files/ckfinder/files/1629355905_562d8e3026.pdfIn PDF document text
    • http://izmirtavla.com/upload/file/lujime.pdfIn PDF document text
    • https://gornjastubica.hr/files/sipoxodinozel.pdfIn PDF document text
    • http://mentor-tutor.com/newGroserLikeProject/uploads/files/96795789761.pdfIn PDF document text
    • http://lhdrum.com/User_File/UpFile/file/20220225100443_NTM5MDg4MTg1MjE=.pdfIn PDF document text
    • http://royalvisas.com/fcs/userfiles/file/18532341534.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616adce421b4f---20903121201.pdfIn PDF document text
    • https://mro.hockeymro.ca/docs/file/488990921.pdfIn PDF document text
    • https://arerp.kr/data/file///fubuzerilewovaxidipet.pdfIn PDF document text
    • http://findmecakes.com/userfiles/files/50037506687.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/89758564891.pdfIn PDF document text
    • http://gucaoyun.com/uploads/file/030820059995.pdfIn PDF document text
    • https://walterchiropracticclinic.com/home/walter/public_html/ckfinder/userfiles/files/90306292620.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_off0005f2e6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005f2e6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005f2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E6 22808 bytes
SHA-256: 410a4baa1e32debe8f08b1b580230f351650a1781f43b64b417aea1cba78295c
font_01_sfnt_off00062e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E66 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00064586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64586 10548 bytes
SHA-256: 9e316b2fcd62f1b577cbbe784ab5ef914c85718c51cd9662eb69e53e4f6282be