Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d5f9dc6583563d…

MALICIOUS

PDF

258.2 KB Created: 2021-12-24 12:21:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-06
MD5: 0bebd86875da1aeb5ac810738f6bf308 SHA-1: 2d9532c0395277e0a7b3b9be18aefcd56ec56476 SHA-256: b5d5f9dc6583563d492b3ecd5730b9bf9a51f26190461f903dc04f23cdaa1127
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=belajar+coding+android+pdf PDF link annotation
    • http://sriraghavendratemple.com/ckfinder/userfiles/files/5270838990.pdfIn PDF document text
    • http://hotelbasantresidency.com/uploads/15353328901.pdfIn PDF document text
    • http://korealabels.com/ckfinder/userfiles/files/tigisimutajome.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/92fc69666c221c242d19ea6d42ac5eb3/tiwekulesano.pdfIn PDF document text
    • http://studiotecnicomartani.eu/userfiles/files/danopoxojojo.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161bdd7cced955---kemirapivifog.pdfIn PDF document text
    • http://scandirent-new.ru/uploads/assets/file/34248362277.pdfIn PDF document text
    • http://michellenevinracing.com/FCKeditor/file/taxezoli.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/chqblmnho55bk1a763v2eng0adq24jpu/nenibinavubixakejorasi.pdfIn PDF document text
    • https://feketemeheszet.hu/UserFiles/File/sojetanibo.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///nedupivavanomuzulaseguke.pdfIn PDF document text
    • http://herbwaterthailand.com/userfiles/files/fetosukotosiral.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/60331375829.pdfIn PDF document text
    • https://printjet.pl/pliki_user/File/81565979468.pdfIn PDF document text
    • http://gamebonda.com/ckupload/files/61721713467.pdfIn PDF document text
    • https://fceresources.com/ckfinder/userfiles/files/80806688358.pdfIn PDF document text
    • http://edu-soft.ru/site/htmlimages/file/96242901378.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/22553305626.pdfIn PDF document text
    • http://bi-acaovo.com/upload/files/tofujemekaf.pdfIn PDF document text
    • http://vipnjl.com/userfiles/files/dovitojememefazu.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/288e04929272cae3f87c89d6110621db/fugarikudinerikedijedij.pdfIn PDF document text
    • http://gzbaosui.com/uploadfile/files/rexazomadexevetu.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_off00039f03.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00039f03.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00039f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39F03 17024 bytes
SHA-256: f567810842cda1f09081eba4537dba659602e20e144690bcddae5ab05c4452c7
font_01_sfnt_off0003cb47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CB47 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0003e1eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E1EB 10712 bytes
SHA-256: 160cdf1867aafdfa703d2689afc3305a423f319aae7d8e3e6069e62fab0cabe2