Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ce282dc480bf6e…

MALICIOUS

PDF

92.7 KB Created: 2021-06-27 00:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c91e37518c8538c5438330922740262e SHA-1: b796afa7edce0d8c98a45e906c0e694bd8490614 SHA-256: 20ce282dc480bf6e55e0513476b33eac3e173d8c6196c471082c78f852ef94df
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many hosted on compromised websites, designed to act as a link farm. The presence of 'SE_INVOICE_LURE' and 'SE_DOWNLOAD_BUTTON' heuristics suggests a phishing or scam attempt, likely aiming to trick users into downloading further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://cristalparkhotel.com/ckfinder/userfiles/files/tijotunudukuxigumake.pdf In PDF document text
    • http://sherwoodchambergolf.com/ckfinder/userfiles/files/45048747930.pdfIn PDF document text
    • http://yachtandgulet.com/userfiles/file/lipowomabojevakupizewozu.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16098b4794a7b1---zozeloxazukuvinaregog.pdfIn PDF document text
    • http://asustainable.com/global/file/38585748975.pdfIn PDF document text
    • http://blbr365.com/userfiles/file/1621195406.pdfIn PDF document text
    • https://micro-churches.net/uploads/file/90131624903.pdfIn PDF document text
    • https://searchkar.com/ci/userfiles/files/wijusonagodujibifirexemol.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086079672caf---36318867949.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/k9sh85a2o74kkpo1coi5s5shf5/61625302570.pdfIn PDF document text
    • http://gasthaus-steinkirchen.de/img/editor/file/17384642111.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab6ad1dbdb7---setibivigabe.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/e4de9517e5d575c6f7c19c8e6928e261/mojakubibegesuk.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b152e1e54cd---8903067619.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5908f9f234---zaxuz.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093fd05a2168---paxiruwip.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/39cbc3e4ebf70e2f9ab9423c7375f72c/gozofoxidijo.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/52162779955.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/mekepikesafexakudeg.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/ce14c52b8ea16a2786bedd9c63b77e10/jinoxisopamexiwivojazak.pdfIn PDF document text
    • http://tfforming.ru/d/files/46943003758.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/kpbr5nks7dr1fc40ijrljd3a4f/50299615493.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=gta+v+highly+compressed+for+pc+downloadPDF 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_off0001043a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C4C 18192 bytes
SHA-256: 5b56657b8612c69a82ba1aad18dcc7ab96478a534b23c6efad3395c5f198bb97
font_02_sfnt_off00014b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B2E 11372 bytes
SHA-256: 6454e9cd8a51f259ff89fea31d17d59ad91a14cdb41b5f98626f033978857aee

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