Malicious PDF — malware analysis report

Static analysis result for SHA-256 bebd2817d64ec246…

MALICIOUS

PDF

100.5 KB Created: 2021-09-04 00:35:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7c51304e980639defcb1fb00887a7e28 SHA-1: 937b96da5335f390225269da80916a5bd77f3403 SHA-256: bebd2817d64ec246aaf58aea29cae8a27a8fe4b26325d05b1dc9f85d6d0217f2
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a malicious PDF detected by ClamAV and flagged by an ML classifier. It contains embedded JavaScript and numerous external URIs pointing to compromised websites, likely serving as a lure for phishing or further malware delivery. The presence of JavaScript suggests an attempt to exploit PDF vulnerabilities or redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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
  • 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.
  • 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://drafthe.ru/uplcv?utm_term=gloomhaven+official+faq+pdf PDF link annotation
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094a167e6850---42596940423.pdfIn PDF document text
    • https://finliz.lt/i/File/14199791134.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/fe508206492ad4ba589601c502291cbd/xanuvobone.pdfIn PDF document text
    • http://thetuckerfamilyreunion.com/clients/67950/File/mopakiwegiguwekotunelur.pdfIn PDF document text
    • http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/jokawazevofurozeja.pdfIn PDF document text
    • http://hotelamadeustorino.com/userfiles/files/puxanivopulid.pdfIn PDF document text
    • http://savoie-outils-coupants.com/ckfinder/userfiles/files/fimemojekixu.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/34ef0a5dd40a58dff0b5f38535faa03b/68324915827.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/tijimemixifabalid.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b916b57e220---xudolozuzitesagitek.pdfIn PDF document text
    • http://oxigensupplies.com/shipinc/userfiles/files/tebinul.pdfIn PDF document text
    • http://cottoneauto.it/userfiles/files/vutorokekirozevomamufote.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/9937160723.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16070e49c826ed---rozifapotefotopejobanikel.pdfIn PDF document text
    • http://hfengly.dk/skoleportalen/userfiles/file/sowemakanunuzi.pdfIn PDF document text
    • http://lltsg.com/uploadfile/file///2021060516102867.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a929d2b3bd7---10145802028.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/pntcat01trrc4ujhahs3v7o7t2/lekatifizoso.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/95771611499.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/1053d71acbce07619b9a8da56c0cc4d9/nulakomovu.pdfIn PDF document text
    • http://kinogigant.com/sadm_files/vowipedexojebu.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607912706fc7b---9945876251.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/rulivovijefapevixaxuni.pdfIn PDF document text
    • http://boathousebrokerage.com/userfiles/file/sujupov.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_off0001248a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1248A 10768 bytes
SHA-256: bd24bf313b7584a2ceedfdadc55b693039335e410d2d1b9a1cf35ed2fbeb96f8
font_01_sfnt_off00013cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CDC 18024 bytes
SHA-256: 583531ecc4b98860a00464bf91dc6fbb9f9d17bb51685ef368e95f389b552722
font_02_sfnt_off00016bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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