Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e8c617f43e2e4a…

MALICIOUS

PDF

80.7 KB Created: 2021-08-30 06:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 448074d19a23303bee04f261ae32efab SHA-1: f5d97ebc3c5833a5cb05e35aebfbbd54f66d07c0 SHA-256: 70e8c617f43e2e4a729d22b37925ad9c1be12fbd9237242e47e4f9dcae22612c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing or trojan delivery mechanism. It contains numerous links pointing to potentially compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The ML classifier output of 0.999589 further supports the high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://archism.ru/uplcv?utm_term=how+italian+are+you+quiz PDF link annotation
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/641df06b5c1bb6f2b8dbbfa097cca694/48818378359.pdfIn PDF document text
    • https://prestinireedcorp.com/userfiles/files/vozokamogaze.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160946b3a130b8---83112009433.pdfIn PDF document text
    • https://rimsball.com/ckfinder/userfiles/files/gojuvewabaronasid.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160abd128dfb20---loxaxijiwosewulivupelefel.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/eeacf21013e4d47b28448ce5214f0d73/fusizovuvavoxemusozeja.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b7664d1ca---74914415864.pdfIn PDF document text
    • http://pk.mo/userfiles/file/47407124080.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/ec6cebb1b94097f3c3590be950c4f933/mawetadev.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/tufokizitofok.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/seviraxokefakewawinagowi.pdfIn PDF document text
    • http://francescofesta.it/userfiles/files/16832784482.pdfIn PDF document text
    • http://girisimcilikproje.com/resimler/files/18182184571.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/6cd0f313535e8a72fa0fcf096e0501fb/90754888101.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2c35c8c29---woloxobofakewe.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c02df0d8015---63926459105.pdfIn PDF document text
    • https://stratasphere.online/userfiles/file/40485742326.pdfIn PDF document text
    • http://zzliuxue.com/upfile/file///fupedimudurijek.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021081420513148.pdfIn PDF document text
    • https://soechi.com/userfiles/file/79536743361.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/erlvjnan83p3lag8v764s9a2p2/popimisukuxe.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_off0000d696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD696 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAD 10432 bytes
SHA-256: 3504615c7f8f8e57b52191388f95432a01de1816bbc202649374a5cddf5c277b
font_02_sfnt_off00010676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10676 18112 bytes
SHA-256: 6d864beb0120637835d97431ee9ee905e4de5754c13308fa008c077ad2f8adf8

Open this report in the interactive analyzer, or submit your own file for analysis.