Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6effae945b1fc0…

MALICIOUS

PDF

411.0 KB Created: 2022-02-07 09:15:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-30
MD5: b8b83d9b6beed61a9ed387df4b022c6c SHA-1: f52fad791adc6679ac0b14721d0b2b34c0422c22 SHA-256: 8f6effae945b1fc03577b77e3c8e3687d63df1f9fb2dc5325e494fbfe01ad131
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6452

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=al+ghazali+livre+pdf PDF link annotation
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161186a7395dd4---farenesomafelifebon.pdfIn PDF document text
    • http://nanobubblevietnam.com/uploads/userfiles/file/97603330364.pdfIn PDF document text
    • http://kondicionery-pushkino.ru/upload_picture/file/31928944531.pdfIn PDF document text
    • http://www.benyowsky.com/resources/files/sotutedapiwabalalego.pdfIn PDF document text
    • http://labradory.pl/file/96737294299.pdfIn PDF document text
    • http://sbsinternationalschool.org/userfiles/file/jakozasagik.pdfIn PDF document text
    • http://influences-vegetales.eu/assets/Image/files/17616942257.pdfIn PDF document text
    • https://esoft.com.bd/assets/ckeditor/kcfinder/upload/files/56404613089.pdfIn PDF document text
    • https://vaynhanh365.net/contents/files/83281636594.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1619e88d0417a8---48713509568.pdfIn PDF document text
    • http://all-premium.com/user_file/files/67009774074.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/sikupanulowitenuw.pdfIn PDF document text
    • http://zoo-foto.cz/userfiles/file/29622521872.pdfIn PDF document text
    • http://www.kyousei-fukushi.or.jp/system/ckfinder/userfiles/files/46158397850.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f0b02bddd5e---37834785736.pdfIn PDF document text
    • https://ask-it.softki.com/Ask-it/UserFiles/file///67920393721.pdfIn PDF document text
    • http://31kouqiang.com/userfiles/file/1634885666.pdfIn PDF document text
    • http://webbuilders.com/files/file/norazijogufepane.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d60dcf3d7f1---rezuvuxajadomuxinatejuge.pdfIn PDF document text
    • http://www.instalacionescueto.com/nueva/ckfinder/userfiles/files/bidupot.pdfIn PDF document text
    • https://obo.olsztynek.pl/assets/includes/kcfinder/upload/files/83950860234.pdfIn PDF document text
    • http://keletunderground.hu/images/uploaded_pics/file/97299444285.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/161b0aff8d0abb---nisovokura.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///20219410483323.pdfIn PDF document text
    • http://fashionflutters.com/ckfinder/userfiles/files/miwusu.pdfIn PDF document text
    • http://glttek.com/userfiles/file/foribunekanikelaw.pdfIn PDF document text
    • http://polins.org/public/userfiles/file/89988082606.pdfIn PDF document text
    • http://perfecturology.cafe24.com/upload/editor/imagefile/zekevotomugaw.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 (stream_008_off00063502.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_008_off00063502.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00063502.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x63502 22432 bytes
SHA-256: 0520606b12a8b88b376468a6ba7b52336af57ae7b4084a6936cf3d585b21b3a0
font_00_sfnt_off0005d460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D460 20444 bytes
SHA-256: be8663e1ef24eee6c869d7fedc0c7e8c841900afec02f729191dac1a45cef89c
font_01_sfnt_off0006066e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6066E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00061d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8E 10392 bytes
SHA-256: 013e82b27d1887f2d8b3c6a77dbaf440b0ead823055c7ba01f15726bca6ffb42