Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e63f6e5a8e298cf…

MALICIOUS

PDF

105.1 KB Created: 2021-08-03 20:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 0112f0f47e2fc28db6f3a840d95d1d36 SHA-1: 66162616dd21373804ebb0d82287ae1d8e142914 SHA-256: 2e63f6e5a8e298cff39b3d472819cd7b02653bd028098d16cb3968fddc45e5f2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress upload directories and other potentially malicious domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery via these external links. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 6

  • 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.
  • 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://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160a4441677f12---73734142222.pdf In PDF document text
    • http://kondicionery-lubertsy.ru/upload_picture/file/gatib.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/95588935940.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/sapizozuru.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16102dc0269b89---vebovurexupuvuxuxogo.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/fubifijepikewovonuzigap.pdfIn PDF document text
    • http://hi-techfiber.com/userfiles/file/tusakokunufadumixame.pdfIn PDF document text
    • https://balticstroy.com/uploads/files/89970682059.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/8d978fcc1d3a6c62eae92f360e711363/zarofalogoto.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/0e994290df127a96afb00b5467733a45/wofodawosulolikixom.pdfIn PDF document text
    • http://icmasistemas.com/userfiles/files/kuvisuxitijukozifuxere.pdfIn PDF document text
    • http://viprealestatebrokers.com/userfiles/files/lejijabedu.pdfIn PDF document text
    • http://tdsns.ru/userfiles/file/zititukanogujezigarok.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf8eaabe923---29286849736.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160f26cac7f4d4---24627734046.pdfIn PDF document text
    • https://talaa-obour.com/webmisr/uploadwebmisr/file/vomaforadukivavulurob.pdfIn PDF document text
    • http://veterinariogiardinelli.it/userfiles/files/fegifuruze.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/wered.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/1788c6a2f358f143816d51eb91221127/6220281477.pdfIn PDF document text
    • http://yournamebadges.com/withyourdog/cms_uploads/file/letuwesa.pdfIn PDF document text
    • https://atlantidegattico.it/file/guwododenuka.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/22300688205.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/13069865393.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+play+warcraft+2+tides+of+darknessPDF 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_off00013542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13542 17744 bytes
SHA-256: 94a7ea4e96c0d46477150c6dd70987ced5fd3b2be4076f5a5d6e979cc6266d88
font_01_sfnt_off00016444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16444 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C5B 11016 bytes
SHA-256: 19842931178fd54ae1f70f24b7947eb0b973b7dee4cf812b192ce6c67cd71cb2

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