Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ea0e985e11503d…

MALICIOUS

PDF

73.2 KB Created: 2021-09-04 11:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 122b5399df6a22dd08cf708b2604bc32 SHA-1: 04d8b08c71dbf7556ed58af0dc28bdbada9f7ab8 SHA-256: 03ea0e985e11503dc47bb83ac66e1811fec477ea6819b7727136d2951611900c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious. It contains numerous links pointing to potentially compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded URLs indicates an attempt to redirect the user to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 https://marbeyoyun.com/calisma2/files/uploads/rurajasojamunebomalu.pdf In PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/2a1a4efffff0a563e5cd37c43dcb5615/zubowewimi.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160c94073a1331---fexesusedorobojul.pdfIn PDF document text
    • https://giaphutelecom.com/tctt/sites/aaa/file/32380892100.pdfIn PDF document text
    • https://airflow-skateboards.com/userfiles/files/59355964822.pdfIn PDF document text
    • http://clair-environnement.eu/catalogue_dynamique/file/30600774762.pdfIn PDF document text
    • http://motivationandmomentum.net/ci/userfiles/files/dobesubixoje.pdfIn PDF document text
    • http://master-br.ru/img/file/xanurovita.pdfIn PDF document text
    • https://digireg.com/upload/wixivijurogatipix.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/nijunun.pdfIn PDF document text
    • http://magooferta.pl/uploads/fck/file/73699993579.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078495b5d859---13965573749.pdfIn PDF document text
    • http://stolizstekla.ru/userfiles/file/80440658955.pdfIn PDF document text
    • http://sampsonancestry.com/clients/d/d9/d9bd9208c4e45de01aa31840e3a8c66b/File/kopugadimixakigu.pdfIn PDF document text
    • https://caraudioshop.ro/mm/file/83738050234.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1610d8b88500a9---ribuludozenosirowijonu.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f38e551233---63458507972.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/47d1cun9k2qprb07olhhpncusg/16152518611.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a0440ff03e2---tagokudotafodofob.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/53458491882.pdfIn PDF document text
    • https://tahitotfaluovodak.hu/ckfinder/userfiles/files/noxegagemisage.pdfIn PDF document text
    • http://kxqcgs.com/filespath/files/20210818154703.pdfIn PDF document text
    • http://tuclubcr.com/campannas/file/xoketafibopagana.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160cbcfc7b1b9e---tedebaviwedonenixuxasom.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/47499639445.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=statsmodels+python+tutorial+pdfPDF 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_off0000ba98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA98 11052 bytes
SHA-256: 5a332f6a385e3d478c40491ba0478de16ee4cbc04737e69175c31eb23c1080a3
font_01_sfnt_off0000d416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD416 16412 bytes
SHA-256: 2d9915c533e2ac6a3c17404e0ea3ef3fc084086264db6bde203a84ce42f5ce63
font_02_sfnt_off0000fe91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1