Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d28efb2aaf68d7…

MALICIOUS

PDF

429.1 KB Created: 2022-03-12 15:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 668cb1298083ed4f8ee7a41349c02d7a SHA-1: f3a8000843bea3c84731a19b27601546322e22e1 SHA-256: 48d28efb2aaf68d76ffa5449825841d54646746b0355e6554a42ef967a342c9d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6803

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 http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621ff4dcd0023---86623931026.pdf In PDF document text
    • https://www.wappa.com.au/siteadmin/ckfinder/userfiles/files/28966446343.pdfIn PDF document text
    • https://valstybestarnyba.com/upckfinder/files/90241257260.pdfIn PDF document text
    • https://resonanceacteurs.nl/userfiles/file/rofexovedepa.pdfIn PDF document text
    • http://iaestedresden.de/userfiles/file/jigewibisajarevifudas.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16224f80038640---33373073644.pdfIn PDF document text
    • https://aeronautike.com/userfiles/file/43117098300.pdfIn PDF document text
    • https://responsible-tourism-alliance.com/content_file/files/28498398621.pdfIn PDF document text
    • https://haruhonpo.com/upload/haruhonpo/files/51061039013.pdfIn PDF document text
    • https://1am130r6h1n1-k11a7.com/contents/files/19114916882.pdfIn PDF document text
    • http://marthomaiticherukole.com/userfiles/file/nibexewigedosejumivivof.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1620c76b36722d---50299995232.pdfIn PDF document text
    • http://manhtreminhduc.com/webroot/img/files/lozuwovemikenixakawiked.pdfIn PDF document text
    • http://cyuanmei.com/userfiles/file/wejopatonimavepepujep.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/496275461b54d8e028b7052bce1044a1/75501293940.pdfIn PDF document text
    • http://ceomit.com/fckupload/file/67222028485.pdfIn PDF document text
    • http://privatmajo.sk/upload/files/wubofajatoganobavupid.pdfIn PDF document text
    • http://tiyuchangdi.com/upload_files/files/20220215_200552.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/162198f0c5ae6a---tejavagutusebukusozu.pdfIn PDF document text
    • https://lazav.co.za/XSRYdR1H?utm_term=flyer+template+microsoft+wordPDF link annotation
    • 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_off00064690.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00064690.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00064690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64690 10856 bytes
SHA-256: 4509e31fdb7f4c6879228d261b9330354f7b78c97133e3944bf293de715f1912
font_01_sfnt_off00065fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FBA 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000676d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676D5 17860 bytes
SHA-256: 6195779d3ac0e339bb6c37a62829903b558834c945dc8f0bc903fe044d0a0591