Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cefe0faced5ba2b…

MALICIOUS

PDF

716.0 KB Created: 2021-07-05 10:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 1f92145eb3c59f0446f83876959aa3fd SHA-1: 3d1ca873229789803c32c5f7dd0a9418d0e02522 SHA-256: 7cefe0faced5ba2b9b4636c7bc8d2afa564725d87f22dfd7d8d81dbb20836d0b
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of an advance-fee scam, using language related to invoices and parcel deliveries to entice users. It contains numerous links to external PDF files hosted on compromised websites, suggesting a multi-stage attack. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the download and execution of further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6245

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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 http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/4e192276106da6780a9dc30023957e8e/50615532724.pdf In PDF document text
    • https://publicbridge.pl/userfiles/file/zebuvokonipalozado.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094955fee7db---16711938663.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/63a8a8230ab9b127fa1db523bb9b5711/95653378072.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075c6c7872d5---71964738934.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/c196cb3d78005cc8ad8cb38d2d876066/58125486985.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/95778117002.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b5ade777a---47020785689.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/jupapipo.pdfIn PDF document text
    • https://mzr-avocats.com/buddha/ckfinder/userfiles/files/meperokiwolimujozijawu.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/cc02eeba9741c587082c2d55d2536c85/fesikevemodidakivaf.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/e720fc584c1019d78ec882904701554d/fixojavutot.pdfIn PDF document text
    • http://vincentpopetutoring.com/clients/d/dd/dd6b7bcf94cac99d3bed97cf8166637b/File/91311625755.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072fa8e5230d---16837639627.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/7od8p8qfer05uemhjs1se2n5l5/13341564280.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/52ucthq65brlp39lduaae5i95u/wobejoboju.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/f9dov1m5rrr7sa4fvndhev6iq7/96474834956.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/senagewapatezurodubasud.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/a296db156a5e233e98336328643b89ad/sajupen.pdfIn PDF document text
    • http://scandirent-new.ru/uploads/assets/file/peduduposewobozi.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608275d9b0340---mizidaxofama.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=constant+bubbling+sound+in+earPDF 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_off000abd14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABD14 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000ad526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD526 19152 bytes
SHA-256: aab870bba6bc3627a5b2b6bb9aa608f2f746624337b8b86c42be4495119d4c9a
font_02_sfnt_off000b0680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0680 10696 bytes
SHA-256: 3fa17dd705f628d801d99204957c72c3866026262ab27eb161b7e1d774ee8b98

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