Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb87086d54a54674…

MALICIOUS

PDF

335.6 KB Created: 2022-03-26 11:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 5f4284ab283eb8a06214ed3eb7b88cde SHA-1: 10818e1b840fa40dc6083cacc69f514089a24195 SHA-256: cb87086d54a5467486655185ce4a1be65f120c5422c109e208cd35db282bc1de
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5565

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://lazav.co.za/XSRYdR1H?utm_term=metodologia+de+la+investigacion+defi PDF link annotation
    • http://ipsc-pv.cz/kcfinder/upload/files/selenu.pdfIn PDF document text
    • http://ablerexthailand.com/userfiles/files/60049581889.pdfIn PDF document text
    • https://www.playitdirect.ca/ckfinder/uploadfiles/files/pejanituduv.pdfIn PDF document text
    • https://dkglobalrecruiters.com/admin/public/ckeditor/upload/files/pobifakubibedamupu.pdfIn PDF document text
    • https://karmak-makina.com/upload/files/3344888465.pdfIn PDF document text
    • http://bearbuy888.coco1490.com/upload/file_folder/file/77881263247.pdfIn PDF document text
    • http://ageddfjtj.pretty-match.com/upload/files/wuluvu.pdfIn PDF document text
    • http://reside-realestate.de/user_files/files/nanelutipe.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/82741510052.pdfIn PDF document text
    • https://alstar.uz/images/shared/file/molafubosud.pdfIn PDF document text
    • http://elmarahtravel.com/public/kcfinder/upload/files/xivebejo.pdfIn PDF document text
    • http://studioaba.net/userfiles/files/wajewokig.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/162216688b74fa---xekegesokegejisuxisok.pdfIn PDF document text
    • https://hokusui.co.jp/hsk/wp-content/plugins/ckeditor-for-wordpress/kcfinder/upload/files/notukujev.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/goribi.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623edb3ca3ba4---80414375996.pdfIn PDF document text
    • http://coca-colalife.eu/userfiles/file/31681479383.pdfIn PDF document text
    • http://mfahk.com/upload/files/92066853925.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/162033c0a6becb---30693944328.pdfIn PDF document text
    • http://zahradnisluzby.eu/foto/image/files/36159434541.pdfIn PDF document text
    • http://iamsong.vn/uploads/files/21507482741.pdfIn PDF document text
    • https://healthresearchinstitute.net/userfiles/file/xedafekejiz.pdfIn PDF document text
    • https://bodzlomu.com/userfiles/file/29252107294.pdfIn PDF document text
    • http://ramenzoni.eu/userfiles/files/24762429597.pdfIn PDF document text
    • http://kk-gorenjska.si/uporabnik/file/57037387384.pdfIn PDF document text
    • https://robvandamfoto.nl/UserFiles/files/90180013639.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/c5f10c50eadb97ed75ea56d7e076134c/misuxixama.pdfIn PDF document text
    • http://tsetv.kz/app/webroot/js/kcfinder/upload/files/katijamifijekugezu.pdfIn PDF document text
    • https://unicorn.mn/js/ckfinder/userfiles/files/wunifafupovedaf.pdfIn PDF document text
    • http://origo.ws/userfiles/file/16985842853.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621f341384830---sezan.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16239e8cfb2950---navosobu.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161fdb71a7c05c---gomeraj.pdfIn PDF document text
    • http://pop-around.com/file_media/file_image/file/5065557515.pdfIn PDF document text
    • http://weldbook.net/upload/files/50263371552.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20220302234616.pdfIn PDF document text
    • https://embassyinvietnam.com/webroot/img/files/kufomipenurijep.pdfIn PDF document text
    • https://kaptenhoki.com/contents/files/48947910114.pdfIn PDF document text
    • http://fpempresa.cen.es/userfiles/files/84263153348.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_off0004cfe1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004cfe1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004cfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFE1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004e701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E701 10612 bytes
SHA-256: 6826b5c29457f4a9ba8fe6205b8815af86f64820bde0e36cc72d918666484048
font_02_sfnt_off0004ff34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF34 18460 bytes
SHA-256: d4f4989078629b28a35d295292a32cd6ab372fef1104018899b55c6d2e5d31e3