Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee9c203ddef6391…

MALICIOUS

PDF

88.4 KB Created: 2021-07-05 21:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b62a4c7e26e5a72ab74c63eac77cf45c SHA-1: fc5a1e6d0fc4ad4b94fee93a64b42c4559e510d0 SHA-256: 0ee9c203ddef6391c57c2cfd9bf14b3a7beabc3d75f09a174154ef1e52fa168d
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS upload directories, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple distinct hosts and the use of 'utm_term' parameters in some URLs further support the link farm and potential phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b82ba9b5669---50661990285.pdf In PDF document text
    • http://samurairamenbar.com/uploads/files/newokidabawiwisune.pdfIn PDF document text
    • http://slp70.com/clients/873855/File/walinut.pdfIn PDF document text
    • http://northphoenixmustangs66.com/clients/4/4b/4b49b54eec06ebba3741256e9f3e6f2b/File/julofupi.pdfIn PDF document text
    • https://memoservicesrl.it/file/mojogawesinumabub.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/89674657952.pdfIn PDF document text
    • https://myupfield.link/wp-content/plugins/super-forms/uploads/php/files/ucdlnij8ql8dg09rta6qu7mcl3/46808325020.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c696005fc17---349497050.pdfIn PDF document text
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/3etvidj5hfs6rcqdqm9e307kr0/32419346561.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739510cf0ae---10284566024.pdfIn PDF document text
    • http://armanetti.com/images/wuluwidojunefu.pdfIn PDF document text
    • https://namdolove.com/FileData/ckfinder/files/20210531_286A2FB5285ABB6F.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/ebb3be0b7e0539fba6640461c39c3bec/punigidenagafib.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/vegekisapewolosejorivukif.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/1235fe666335de568dd494d36709109d/fimak.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16076fd7b09a33---vibafixo.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a77506aecc---lepitulab.pdfIn PDF document text
    • http://dd-eng.com/files/files/83475759721.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/c0b3f892f0f2afe8366f681c2e2deea9/dupagavitawimoluxon.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/s2gr3r7ivoaj5evoftekgj5nt9/21342378824.pdfIn PDF document text
    • https://dursunguney.com/userfiles/files/femorojiz.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160702205aaed8---diviteguzinaj.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16083cf2ac2a66---23264167984.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/3f6b0170eef8e366856db184e0602c6b/zozopaxo.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609e68e4401cc---jobekilozanawofori.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=long+haired+vizsla+for+salePDF 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_off0000f6f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F5 10616 bytes
SHA-256: 5e20489e451086c1c4293a85e7613902e661415e1de74807a6983a01cc714e63
font_01_sfnt_off00010efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFC 17344 bytes
SHA-256: 1e98e8909e6c4392208d0813c0bef94cf2a62fb7ef928d981a7487ebda7c7c23
font_02_sfnt_off00013c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1