Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ca37220ad2fb33…

MALICIOUS

PDF

97.0 KB Created: 2021-06-28 18:26:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 666bc4612a01bead9747a47a9721abed SHA-1: 63f5bb47b881b42574cf0c199d69f431010ecfcc SHA-256: 47ca37220ad2fb3354910d81c8c25b7b19939a9656ecaddc5532017e225b7325
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm hosted on compromised CMS uploads, pointing to numerous unknown URLs. These URLs are likely used to distribute phishing content or further malware stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/f93378f8efef87441474fbebf411c1d3/vagulaneximuxafil.pdf
    • https://mudraconsultancy.com/uploads/files/vuwotofudepowesafid.pdf
    • https://cdpu.net/wp-content/plugins/super-forms/uploads/php/files/5f2627028dafb8b1728f38f8a6020a36/55026440050.pdf
    • http://webursitet.org/Files/file/ragafizunaluzawa.pdf
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/b400bd09fd1c7ccac51ede0991acee66/44801759227.pdf
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/e6tlfqs4htmma34v8d0jnaj7nd/woxegirokipivaranobo.pdf
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/388b76e78a2f042ff5439a55a9aa1c3a/8710518192.pdf
    • http://www.mearesandassociatesllc.com/siteuploads/editorimg/file/bewufogoxevadebukovubaw.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/39b1bf6b57c4729f11414fec10df51e5/67293976949.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609abe0223ba1---9394628667.pdf
    • https://calmoinc.com/upload/editor/file/54120875455.pdf
    • https://educhina.mn/editor/files/93615409872.pdf
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/4f464b1a03fba83ddc3f6404496841c0/64598933832.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b303faa101c---89277728014.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/561b9cd60ed23b9b5b3beca4206d04e1/4683305216.pdf
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/16080e9ef96914---bazigezovisesiwekefip.pdf
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/5033rrv6gs6qs8tav4lmu2cruj/nivilejelevuzunanovi.pdf
    • http://quickvideo.nl/userfiles/file/wamurejo.pdf
    • http://ashioke.com/images/library/File/61483600986.pdf
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/c38bgqv6sj0tmkka6gek881tr9/zejadigibelonutaruzowanow.pdf
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/bbfc72a3a6428b5199e44a0c96a8a909/29389846510.pdf
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/9687583702190123bae8c48e1f212e30/76493512569.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/2505084704f1b39dbbe8fef16372050f/97592627814.pdf
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/8n4dpt1d2e2nr2i4ki9rbuiv0s/24490424863.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=most+realistic+games+pc
    • 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_off000118e4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x118E4 16792 bytes
font_01_sfnt_off000130f6.bin
9ad90db01029630e29ab2a457b7434f1261ea4e5f0db1b958cbe12f0778c4771
pdf-font-stream PDF embedded font (sfnt) at offset 0x130F6 17472 bytes
font_02_sfnt_off00015ebd.bin
aa796dd383c2b88d5f080586f3138e693291817244ffe6649d503493023fbb76
pdf-font-stream PDF embedded font (sfnt) at offset 0x15EBD 10604 bytes