Malicious PDF — malware analysis report

Static analysis result for SHA-256 322659230c1fcafb…

MALICIOUS

PDF

85.3 KB Created: 2021-06-30 10:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 12dc4336537f4681312493eba253501d SHA-1: c5d2577c36e24153de548fead37aa3336372bbb7 SHA-256: 322659230c1fcafbf0571d91202679e3cc45f56e5ff44832c30f30efcec10f34
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress upload directories, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://huntic.ru/uplcv?utm_term=phobia+of+being+fat
    • https://promise-land.com/upload/file/karazagigipabixaxufi.pdf
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a27fee15647---50602620503.pdf
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c49557cc209---belivurimetodej.pdf
    • https://indiantalentjunction.com/milan/media/bepexapevuwulupasogatizam.pdf
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/b021096c356a0bf6c6b7d5145806e9e3/39311777497.pdf
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/06dv9h5ks8au9ta8keqpf1t3b1/xexukogabo.pdf
    • http://bogelaipigeon.com/upload/file/vegerujosotasadabolevot.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/c386c9e378d7d92cfa720b10643e7b6f/39022194554.pdf
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608131e97e8be---likiwupenez.pdf
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/16087f90c50525---zozekubasuwofuweni.pdf
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/8a135934b67681180bf6c42fde2cdbf3/91003315843.pdf
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a605be8f4---jimoxagupetanetow.pdf
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/583e7ec058762192f04b42ede29d5fcd/levedotibemi.pdf
    • http://earthtalismanjewelry.com/clients/b/b2/b27d4d76c51cd35ccef873a204118430/File/wafuta.pdf
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/0vffi30s26rsv8ho9nnm6039fe/pirenejinopixipesinikaxov.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072003f23e25---bezovidulu.pdf
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/u4fnn1db39t5n2ab7gegmgcuk9/rafitegixapugokexojale.pdf
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c20325d65b6---82389077042.pdf
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160bca76ce264a---zafavobojagafiv.pdf
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/36e4cc2dc762ce106db9ff7ed5fc1404/26773514239.pdf
    • https://nhorizontours.com/userfiles/files/54121565479.pdf
    • http://fouladsazanco.com/Upload/file/bakebaperotadixagiru.pdf
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/71d612a6a4b0d679b13f3eab7f39c9b8/56190025737.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec8c.bin
a2177f2ea7edf6532e3b2526908f9f908c561b676b4399cadbcb277c4efbce01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8C 16484 bytes
font_01_sfnt_off00011760.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11760 16792 bytes
font_02_sfnt_off00012f77.bin
2c25e60d9014e426538b1c4fd9206a1339d171a11f7a45bace09210e9afaa51d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F77 10320 bytes

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