Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8bfe2f42208924…

MALICIOUS

PDF

388.3 KB Created: 2021-12-23 10:43:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 69c6b89648ef3a2f13535437a2f6d0fa SHA-1: 196b459528aa0637ea35ca76527929a1e7a4e4b4 SHA-256: 5d8bfe2f42208924b633b2d4761b1322902a9c9103d00deb531a0895db44bef4
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8080

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://riminabda.sk/userfiles/file/31122634395.pdf In PDF document text
    • http://sarica.com.tr/ckfinder/userfiles/files/lotogiximedasigemon.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/5ms0tplhi4eduk2uageb8i3719/95408599535.pdfIn PDF document text
    • http://air-ned.com/uploads/files/mupawonibumimekifuviwa.pdfIn PDF document text
    • http://www.addvanceo.info/userfiles/files/57862993977.pdfIn PDF document text
    • http://creptiles.dk/userfiles/file/65016858354.pdfIn PDF document text
    • https://sardiniagreencoast.com/userfiles/file/zebojipemaze.pdfIn PDF document text
    • http://www.waetsukai.jp/system/ckfinder/userfiles/files/96772511869.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a6f86b09c1d---9878644066.pdfIn PDF document text
    • http://milkexim.ru/imgeditor/file/melev.pdfIn PDF document text
    • http://tiwtactic.com/userfiles/files/wosufunewimupi.pdfIn PDF document text
    • https://uleshuzatabc.hu/files/file/41456989425.pdfIn PDF document text
    • http://thy-environment.com/userfiles/files/15988860235.pdfIn PDF document text
    • http://barrybusiness-crm.com/ressource/devis-photo/files/xovukizusikofuduwib.pdfIn PDF document text
    • http://dmkert.hu/files/file/98856784313.pdfIn PDF document text
    • https://pima-alarms.eu/slicice/file/sezuzanemepufizizes.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1616a4f516c1b7---buvofaru.pdfIn PDF document text
    • http://locnuocvietmy.com/Images_upload/files/98833144582.pdfIn PDF document text
    • https://simplehome.ro/ckfinder/userfiles/files/wilonejobusor.pdfIn PDF document text
    • http://portalcom-b2b.es/img/user//file/_0796556001638454076.pdfIn PDF document text
    • https://betsin.org/userfiles/files/jovepodebuginir.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16186b2415b992---puwon.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/dd42dbt85a41c5u453i5iji5hj/4424533248.pdfIn PDF document text
    • http://foodchemsino.com/d/files/tajesuledifereboxesinose.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/40769918208.pdfIn PDF document text
    • https://wyslijpaczki.pl/app/webroot/files/userfiles/file/60695176032.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/BcFPVxLj4jw/uplcv?utm_term=building+maintenance+schedule+template+freePDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7A8 16424 bytes
SHA-256: 3729489ec4c6cf3c716e7636efb39c34f75222ecc602429075d5b71fe5f8e731
font_01_sfnt_off0005d24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D24B 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0005e8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8EF 11100 bytes
SHA-256: c513e11ada83a82baeac2c762f4fc22609227ff1b98d4b22b8e8bd7ec4651e4f