Malicious PDF — malware analysis report

Static analysis result for SHA-256 487b8615598f9962…

MALICIOUS

PDF

331.2 KB Created: 2022-03-20 09:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-21
MD5: ff0e2852d723c42f835fa7d1d1d444e6 SHA-1: 0339e2a7e524b60b756e1e0d24ab01d5f683cdd7 SHA-256: 487b8615598f996239b799f582f5c159e33991b55b133d00744fd1bd705001cf
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7724

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://cerfi.amy-world.net/upload/file/25152356576.pdf In PDF document text
    • https://acgroupenterprise.com/userfiles/file/zasiseta.pdfIn PDF document text
    • https://dondepodemosir.com/userfiles/file/guripuvesuz.pdfIn PDF document text
    • http://aprt1day.ru/file/86286940442.pdfIn PDF document text
    • http://podarox.ru/public/files/rijimumazunafiw.pdfIn PDF document text
    • http://xlith.com/userfiles/files/zebuwatos.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622d61059cfd3---zesok.pdfIn PDF document text
    • https://najemwroclaw.com/userfiles/file/xidodigujigewugo.pdfIn PDF document text
    • http://profuturis.be/kcfinder/upload/files/45622476501.pdfIn PDF document text
    • https://siriusdynamics.com/assets/uploads/files/81845653760.pdfIn PDF document text
    • https://latvanysport.hu/upload/files/67694214032.pdfIn PDF document text
    • http://brain-sh.tw/upload/file/43217278516.pdfIn PDF document text
    • http://progetec.org/userfiles/files/85483622834.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/60042167151.pdfIn PDF document text
    • http://decaldankinh.net/upload/files/96670865756.pdfIn PDF document text
    • http://jinruily.com/UploadFile/file/20220225061524382.pdfIn PDF document text
    • http://weddingfavoursfor.co.uk/kcfinder/upload/files/bugexo.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621f281c0d14a---58374685193.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621c775ee8e54---pativov.pdfIn PDF document text
    • http://krakowska98.com/zdjecia/fck/file/93888611304.pdfIn PDF document text
    • http://www.tm-africa.com/beta/public/uploads/cms_filescms_files/bixawedo.pdfIn PDF document text
    • http://abmys.org/kcfinder/upload/files/10964219268.pdfIn PDF document text
    • http://ramenzoni.eu/userfiles/files/difume.pdfIn PDF document text
    • http://jiuhuapm.com/upfile/file/1985964412.pdfIn PDF document text
    • https://bharatiyabhashaparishad.org/ckfinder/userfiles/files/89043044389.pdfIn PDF document text
    • http://alda.pl/ckfinder/userfiles/files/57969566207.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=the+bauhaus+and+design+theory+pdfPDF 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_off0004be86.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004be86.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004be86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE86 11048 bytes
SHA-256: 8fb426cfeff58c65bc3a1cb4fa9d671497ceeb984bd44a4656c22d4c99c3f543
font_01_sfnt_off0004d7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D7C8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004eee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EEE3 18044 bytes
SHA-256: 3f9c8ccc4b64b5a02671b83430c277db427804e1fafc855b685f3b1fdf5ab749