Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f3fdb115ae51af…

MALICIOUS

PDF

314.5 KB Created: 2022-02-01 10:49:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-08
MD5: 79b91aeffd8a6d01dbb7e3465dea8b04 SHA-1: dbec18cf7d898c98898ebb3fe1ef950925719503 SHA-256: 98f3fdb115ae51af5bdccba98ad9e9291105440809db2b9b8e70a2c9c4a8b0b0
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6324

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://sunuf.co.za/XSRYdR1H?utm_term=antebellum+reformers+speed+dating PDF link annotation
    • http://restravel.ru/ckfinder/userfiles/files/3551480095.pdfIn PDF document text
    • https://animalplus.hilariousworld.com/nouvelles/files/vozoralumure.pdfIn PDF document text
    • https://tinhhoaxanh.vn/userfiles/file/pavanukarajetid.pdfIn PDF document text
    • http://globomax.eu/userfiles/file/24013125665.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/kefakesokodikituxu.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2021112100253169.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/favobubilufexi.pdfIn PDF document text
    • https://golf-tout-terrain.com/publish/page/file/78380217655.pdfIn PDF document text
    • http://gazduire-domeniu.com/UserFiles/file/sivemizomomokukaxo.pdfIn PDF document text
    • http://www.f2dassociates.com/userfiles/file/viwopizusemawaf.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/16671612781.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161bed96d7fcb0---bobevosobalegukudi.pdfIn PDF document text
    • https://www.stc-tn.com/webroot/upload/files/69353167204.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/up9mt131luq3pp5djvtrmcjn8q/90578344168.pdfIn PDF document text
    • http://simonova-zahrada.cz/ckeditor/kcfinder/upload/files/zosunaxiluputof.pdfIn PDF document text
    • https://rhkapadia.org/Admin/plugins/kcfinder/upload/files/59081881229.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/52489847339.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/68d74aac11a7c4baca25f06e9ed17181/38070050668.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16179507774f1b---zetatub.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/vl84vhd4lhgjnko1cn7ggufe73/gawudovuleputafidine.pdfIn PDF document text
    • http://sooam.com/files/fckeditor/file/1387310547615981acad537.pdfIn PDF document text
    • http://xn--c1ajalgzu0a.xn--p1ai/userfiles/file/43701412589.pdfIn PDF document text
    • http://noithatphathuy.com/Images_upload/files/84088426948.pdfIn PDF document text
    • http://studiomontironi.eu/userfiles/files/77289401523.pdfIn PDF document text
    • http://artio.pl/files/files/36720900518.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/11981d732303390afd2bc7fe2d5ba0b5/30103744878.pdfIn PDF document text
    • https://www.auto-ecole-rive-droite.fr/ckfinder/userfiles/files/69740783047.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/2bc7289tp5ahm3ugv411m3c9rp/kebitipe.pdfIn PDF document text
    • http://old.bgk-meshkova.com/ckeditor/ckfinder/userfiles/files/16115960740.pdfIn PDF document text
    • http://bioident.pl/photos_fck/file/8326512848.pdfIn PDF document text
    • https://gkatsov.com/userfiles/file/fikawejaturatutufeb.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/mefefowivofamipoxekafaxoj.pdfIn PDF document text
    • http://slotkuda.com/contents/files/75580232877.pdfIn PDF document text
    • http://print-printonline.com/ckfinder/userfiles/files/37383231058.pdfIn PDF document text
    • https://jajugroup.com/ckfinder/userfiles/files/pajamupakobuw.pdfIn PDF document text
    • http://setunari.com/uploads/news/2021/11/30/file/wogusuvikakudidukuv.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_off000461ae.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000461ae.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000461ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x461AE 16568 bytes
SHA-256: 8512b89a7c130a1fe46ef1ea8ce0a18ce77c60a50ec1e0a899df499856c07420
font_01_sfnt_off00048cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48CF0 8684 bytes
SHA-256: 7963382a35659314a81cfd1a874a232a642ae3d7fb656aaf999e19f57694ee47
font_02_sfnt_off0004a9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A9AA 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_03_sfnt_off0004c04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C04E 11060 bytes
SHA-256: a225ea17f2b0bc7a7b01f73ec4e7ac1a6e6e8a83c61f350f946de38c33168af6

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