Malicious PDF — malware analysis report

Static analysis result for SHA-256 05354056c25e592a…

MALICIOUS

PDF

96.9 KB Created: 2021-09-07 01:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 47c03377989896fa82d3453943f7750a SHA-1: 9e83668732a9e875ee46e5a6a46e0b31ce1f6feb SHA-256: 05354056c25e592af0c7325e856e928c9be02fc40316e8db1d988f6dbce46ceb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://michellenevinracing.com/FCKeditor/file/kezowakizuzamovojowufi.pdf In PDF document text
    • https://abzesolar.com/uploads/files/xogaduwetapomuzojubif.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b259ebb765f---rixiremaliwemiwexule.pdfIn PDF document text
    • http://gvs-russia.ru/admin/ckfinder/userfiles/files/bajege.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e067064d9f---dijuvupipepogukalegakug.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/29971200708.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/6ff54a96c4e9c76dc4eb1d5e72a59154/59045468382.pdfIn PDF document text
    • https://crownprolaw.com/userfiles/Proj_Name//files/kejodimamite.pdfIn PDF document text
    • http://cephedanismani.com/images/pages/file/dadujixevuloxezena.pdfIn PDF document text
    • http://thangmayedex.com/webroot/img/files/zibojeduluwitamamunas.pdfIn PDF document text
    • https://condominiovillage.com/userfiles/file/13967153059.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/66691378507.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/53347012121.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/7c4e3abed06513bac418b0263f390b09/78793374555.pdfIn PDF document text
    • https://fier-forjat-valimet.ro/ckfinder/userfiles/files/82611008680.pdfIn PDF document text
    • https://betenagro.com/sites/default/files/file/zukulalusekalogejevodit.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160962f004294a---wubatunenixigujegiperap.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a71b72cfc0a---viwonagofezewuz.pdfIn PDF document text
    • http://51-lq.com/userfiles/file///72453298895.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/v2nkmipea8ugpq4ae9pnqqf0m1/32809675803.pdfIn PDF document text
    • http://musthighschool.mn/ckfinder/userfiles/files/wawubolud.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16093046b614ce---nugoganad.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/37070708282.pdfIn PDF document text
    • http://rhodeislandalpha.com/clients/56223/File/vopusavobe.pdfIn PDF document text
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cba24740e2---duvuxaminosorew.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=physical+distribution+channels+pdfPDF 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_off000115ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115ED 11072 bytes
SHA-256: 0b1ef24fd9a3e7de17d3f134504282cbb9c016593c694e1902ece992cc48a9e1
font_01_sfnt_off00012f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F7B 17956 bytes
SHA-256: b8af6846c295ee7fce41dc80d262d69a668fc45d0390fe57ccb3dbb4de537ae3
font_02_sfnt_off00015de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DE3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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