Malicious PDF — malware analysis report

Static analysis result for SHA-256 030b96f9c66970cc…

MALICIOUS

PDF

85.5 KB Created: 2021-09-02 17:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d2dae088132379022f6a83a82a3cf555 SHA-1: 849bf222153ea7c17a78a11f3c295304f879baca SHA-256: 030b96f9c66970cc95092230dd69aeec8085013ce71b0e971e43a9fadd7d3eae
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload directories and disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the heuristic firings related to URI links and the overall structure point towards a malicious document designed to lead users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://www.hydro-tg.pro/upload/file/fipidefoji.pdf In PDF document text
    • https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/aacf0c628bc513fcd6afdcea5408bbc4/zutelizenogokifutazozenod.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/fce4e2592d38b5f8a4c565cfc0c1683d/36767974974.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/44077636458.pdfIn PDF document text
    • https://tvsporedi.si/vsebina/tasetemojokad.pdfIn PDF document text
    • http://tuderprogettazione.it/userfiles/files/96123448708.pdfIn PDF document text
    • http://chalappuram.com/userfiles/file/wufelomuputoravisefe.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d5c501cce---43996995042.pdfPDF link annotation
    • https://rpitrade.com/ckfinder/userfiles/files/paxit.pdfIn PDF document text
    • https://aquatim.ro/uploads/files/4641150196.pdfIn PDF document text
    • http://euro520.net/userfiles/file/16248223461889577851.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825c947f2fd---51220895743.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e139a9327---wemijuxixebobifesokijo.pdfIn PDF document text
    • http://dienlanhlongan.com/upload/files/nudobirufamafuradabaxetoz.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d36ab9aab---35772864071.pdfIn PDF document text
    • http://etkindenetim.com/resimler/files/zuzizokano.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/h5tvcokgdlf9plgv6408ukkimn/48489216418.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/wixakoxeguxurenawivefige.pdfIn PDF document text
    • http://xn--12cmi2byac9cdhd0hra6d7bxkwbgj1gch.com/user_img/files/37929150082.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/e93bp12tmq1nts0jv70e5q6ttu/burebakakowu.pdfIn PDF document text
    • http://chinoboxingclub.com/clients/36032/File/xifevalolinakodeb.pdfIn PDF document text
    • http://meuble-tunisie.com/userfiles/file/gafolotonotazobogurafimo.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16096007cee661---25194793523.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610d2f48214b6---29265811302.pdfIn PDF document text
    • http://nuovartea.eu/userfiles/files/tobekarifatavunafamut.pdfIn PDF document text
    • http://steakclubhn.com/campannas/file/xopafimazozojikuxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=manqoos+moulid+pdf+file+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_off0000de9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9E 21168 bytes
SHA-256: b216adf709df6f3f64dd31a4b3a2d2013fb60e6c2ccf312c712e31e66e7a53d5
font_01_sfnt_off0001170d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1170D 10784 bytes
SHA-256: 76dd6bc41f393edd48e65ff77a42d7700a8f1dc8c708d4d431ba9c6f2cbf250f
font_02_sfnt_off00012fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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