Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfe44a4dbbe89dc…

MALICIOUS

PDF

71.2 KB Created: 2021-09-04 20:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: bdee8e91615e476fc40e43685115ddf9 SHA-1: f16dc4acf19ed56ef5c8e3234155910bfc92d010 SHA-256: 0dfe44a4dbbe89dc6991276dba880cdebedb4d99d713fb1d757c97ee9498239b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with known phishing and malware delivery techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/682fab8fe0c7b5103f6d0f538c6f8bdf/nudapegesituwulevigewuw.pdf In PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1607f893e5f14b---43841671709.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e77726e381---jiliguwoxawavosabirisob.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090dd03761f9---49344212402.pdfIn PDF document text
    • http://wchs65.org/clients/b/bb/bb65574a37642f7fe3135935df861e67/File/bulen.pdfIn PDF document text
    • http://rickgrisolia.com/userfiles/files/koxamore.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087d87b635d3---66613037286.pdfIn PDF document text
    • http://axwelindia.com/uploads/pikimowufudukijaruro.pdfIn PDF document text
    • https://jbdclothiers.net/emailer/userfiles/file/52200506611.pdfIn PDF document text
    • http://kroonzuivel.nl/ckfinder/userfiles/files/21852137794.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/vadrtbk53dhla7jhgk6kj8h6v4/wewugatar.pdfIn PDF document text
    • http://zoltysnieg.pl/pliki_wyswig/files/wikovaruxisuwuvokufozagi.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aca2265541f---refotajufeba.pdfIn PDF document text
    • http://ulleungroadtour.com/FileData/ckfinder/files/20210823_46558762E1EC88B7.pdfIn PDF document text
    • http://vinhthuan.asia/upload/files/12653278760.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/9878280970.pdfIn PDF document text
    • http://flagrant-desir.com/userfiles/file/67171152487.pdfIn PDF document text
    • http://jullien38.com/ressource/site-image/files/34898618426.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160dce72f43558---kozagowunoleropu.pdfIn PDF document text
    • http://neo-net.info/giganet/files/file/93777524036.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/42301082243.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/ef3dcf9e105e0bd2d0f53f8f1e05990c/45274191590.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa2b76929f---20334943239.pdfIn PDF document text
    • http://tuning-zone.eu/userfiles/file/wajupug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=pdf+taqreer+books+download+urduPDF 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_off0000b644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB644 10820 bytes
SHA-256: 99a94291de11cc7ca307e4221e94489eec484905eca48565158f0007b15de6c3
font_01_sfnt_off0000cf40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF40 15856 bytes
SHA-256: ec98af437f08421f929c1797b1bd585f785fff2cda78738cf410630a9179578a
font_02_sfnt_off0000f764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF764 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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