Malicious PDF — malware analysis report

Static analysis result for SHA-256 624beebb239a0ccc…

MALICIOUS

PDF

246.2 KB Created: 2021-12-24 00:05:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: 039ef1fb4bf78b2c80c8a1118a1a0f0d SHA-1: 9541aa2625a75c1fb8a87b861f609f2985abd5d2 SHA-256: 624beebb239a0ccc23174aa6658b88d78fb80d73f0d123c2b75c2b40f52dcc5e
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9729

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 http://thaihotelsale.com/FileData/ckfinder/files/20211206_52C7F52CBA158E83.pdf In PDF document text
    • http://zit-tech.com/userfiles/files/45908202292.pdfIn PDF document text
    • https://taumed.kz/upload/2021/11files/211103180231884225fognz.pdfIn PDF document text
    • http://kco.su/userfiles/file/87499976135.pdfIn PDF document text
    • https://vietnamwelder.vn/uploads/news_file/91952591485.pdfIn PDF document text
    • http://iphysiology.ru/upload/pesofizizuzuvojagewek.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/a0qvkt1oovqp26ca8um33n4cnk/74219651460.pdfIn PDF document text
    • https://33mobility.net/uploads/files/93523832199.pdfIn PDF document text
    • http://thuduchouse.vn/pics/file/24514973387.pdfIn PDF document text
    • http://jakpaisanestate.com/images/upload/files/89794462924.pdfIn PDF document text
    • http://abwlargo.com/uploads/files/wilewosowuveku.pdfIn PDF document text
    • http://jiducn.com/userfiles/aa/file///55484875179.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a803907dc66---faxonikima.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615fff75852f4---68989840405.pdfIn PDF document text
    • https://serka.com/serka/upload/files/bimekifido.pdfIn PDF document text
    • http://quiltingacademy.com/fckeditor/userfiles/file/98166729396.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/TxADE9PCSUw/uplcv?utm_term=avid+installer.+msiPDF 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003710d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3710D 16824 bytes
SHA-256: f0ac6d3aa9e59381cf15843015fe407e06a31df4a03cb575a60319ceb6860ffd
font_01_sfnt_off00039cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39CF8 10400 bytes
SHA-256: bc6af84653c774505faeff0d84d7b076a2a6f3abdaf9e4446faa68ab586ca14a
font_02_sfnt_off0003b47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B47F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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