Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7b9490ee540c5c…

MALICIOUS

PDF

316.5 KB Created: 2022-01-11 01:57:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: b920038746091a6d729d9dea1c299118 SHA-1: 51a89d792718004d5d602f254a79729a16915e08 SHA-256: cd7b9490ee540c5c8a00db1c96df69886e9735b89627a2364ff8fdaa166f0af4
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7819

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://smidgel.ru/uplcv?utm_term=answer+for+heaven+actors PDF link annotation
    • http://ecohost.ru/pics/images/file/lopobapo.pdfIn PDF document text
    • http://cudicio.it/images/file/gizikeseviwugola.pdfIn PDF document text
    • https://alfalahmedical.org/c_panel/ckeditor1/ckeditor/kcfinder/upload/files/vadavutaw.pdfIn PDF document text
    • http://bygreenpure.com/userfiles/file/26081940129.pdfIn PDF document text
    • http://csc0851.com/userfiles/file/20211112173435_b4bplg.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/21tcsuhpl517d81tfde72mvul2/2613712302.pdfIn PDF document text
    • https://www.ajmetaldesign.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/nobegowurowinemupofajoz.pdfIn PDF document text
    • http://think6.net/ckfinder/userfiles/files/20211217061002.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161c259a383921---naxejemizumumidumikofaxu.pdfIn PDF document text
    • http://le-nora.com/userfiles/file/27615759916.pdfIn PDF document text
    • http://themadthinker.com/temp/vinney/HTML/userfiles/file/dodabonozu.pdfIn PDF document text
    • https://dental-essence.com/admin/userfiles/file/volipov.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/4a958b92b3e3815d281ace7f9cf5bfe4/vulamolejeg.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/gegefok.pdfIn PDF document text
    • http://www.palmettoexpresslanes.com/system/js/back/ckfinder/userfiles/files/tebazexug.pdfIn PDF document text
    • https://kratky.eu/files/file/joxibigudit.pdfIn PDF document text
    • http://igigeothermal.jp/userfiles/file/66324866595.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/2e0aeff2dc4a8ff554d8854515a8a6ac/36815653558.pdfIn PDF document text
    • https://imagebrandstudio.com/userfiles/file/57718118507.pdfIn PDF document text
    • https://r4binsh4h9-att.com/contents/files/79155872956.pdfIn PDF document text
    • https://egca.fr/userfiles/file/muvedotiruvenef.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c6ea1e93b70---mejipogu.pdfIn PDF document text
    • http://fredericjean.net/oplusco/file/vazelizuxesek.pdfIn PDF document text
    • http://revistaspontan.ro/assets/ckfinder/core/connector/php/uploads/files/45647394646.pdfIn PDF document text
    • http://educasters.co/ckfinder/userfiles/files/betizefawoxusapetutiwux.pdfIn PDF document text
    • http://trungtinjsc.vn/upload/FCK/file/vuzabaxagudojetilokajam.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 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_off00048246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48246 19236 bytes
SHA-256: 37b8ffe0b013d0b2604944af1f79490a6ec4984562451e79ab85963e93c7866b
font_01_sfnt_off0004b4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B4E7 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0004cb8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB8B 10428 bytes
SHA-256: e05f503fec49a74b96db56c2c3e054cf4a160c0283852ff2a147ec79d80a470e