Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e08aae0455dc97a…

MALICIOUS

PDF

100.1 KB Created: 2021-06-25 20:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 752500ab2af7f64ffd8c8e6a71f4b6c4 SHA-1: c686eda42d40ad4ac91b647eb340796ba08655ed SHA-256: 5e08aae0455dc97ac1e8ae37c4284162ca1a098ceb6deec99267e6970abd3b92
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised CMS upload directories, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The file's structure and link farm nature are consistent with techniques used to distribute malicious content or lead users to phishing sites.

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://widepolymers.com/userfiles/file/39494221533.pdf In PDF document text
    • http://bdn10.cz/files/file/natabikusibu.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///beniz.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/4725430454.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/4c8c32bb2e0f966d5795b33137ecfa61/lotabulumivivagozodufotow.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/molikowagaxanonoge.pdfIn PDF document text
    • http://bainihu.com/upfiles/editor/files/54270728206.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e203d2371f---79059228571.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16084f17f98c7d---renuvometuxiwofezoju.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/dbea3935dff34ef1c997c5201cd0b356/zilefazesa.pdfIn PDF document text
    • https://hirurgija.me//files/sagedidedoxox.pdfIn PDF document text
    • http://myflora888.com/ck_files/files/2638690915.pdfIn PDF document text
    • http://asahiru-ban.com/files/files/45860248537.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/c00f35db5f71258a1f800da8e5453262/64320937943.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/d9aa03d4af32f2fe3bfe5d8d87067e2b/guliminewidebumogasi.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160886d2fe5514---46203127938.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099bada224d9---37308866981.pdfIn PDF document text
    • http://aczelzalog.hu/tmp/pafilawozuwo.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/fq39chva8r2s0ratqqv9vep70l/45693566647.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/94cu3frpcuaimkoppd3jpa9ht3/83301477186.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b636ebd8291---radotadabijobirabiwejiw.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16078dc901b0c0---40439468074.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=pokemon+fire+red+rom+desmumePDF 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_off000126f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F08 10404 bytes
SHA-256: 0a37abaf0d7906a47d2210bdad12f07fcb83d1523b85fbce561d37b77957e0eb
font_02_sfnt_off00015688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15688 17152 bytes
SHA-256: 315df2927c148a3c9fe94afff688a0e068cf1d1566580f224798bf68f63ee65d

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