Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d210a7f7f864a12…

MALICIOUS

PDF

86.9 KB Created: 2021-06-19 20:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9602e8f6451b97c5bb390832e520a5ee SHA-1: 036d1bcc381efd170ee8bc5dd109872f8b3253f2 SHA-256: 4d210a7f7f864a1285cc4b577f231d596becb5f42199bd0e8af2b71ce25de331
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links pointing to compromised WordPress sites, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious PDF documents designed to exploit vulnerabilities or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ab66c5cf7---42309672551.pdf In PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bff4ced6a64---7250456120.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/ccv6rjevoq71j7tbth36nf5bao/mimimelizubimofopume.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16099bfee16c02---29264160085.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/eab652831a7cc9c54a2d72d84adc3dff/puzapatef.pdfIn PDF document text
    • http://virtualcharityevents.com/vce_cake/files/files/dasuganokowepaleve.pdfIn PDF document text
    • https://voyagerf.ru/wp-content/plugins/super-forms/uploads/php/files/35cc0b650c024a85beda3a2dc92c0160/51363912406.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb9d0dfb66---kipuredimuwa.pdfIn PDF document text
    • http://jorkurojus.com/userfiles/file/36637711799.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/73c9d3e433d7f92fa1164f95ffb7893d/xujadefopixukifu.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/82u79veo3c76trh9v7s0o3s92t/wesapiforozedetemopoxog.pdfIn PDF document text
    • http://adbuffalony.com/uploads/files/33267988042.pdfIn PDF document text
    • https://www.propertyadvisersaustralia.com/wp-content/plugins/super-forms/uploads/php/files/d8754a16f292f05c9d4f82c78a28443b/senopixupevufivubo.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160746b6e47297---kedabuledodofejo.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7083a0859---giremat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=satyanarayana+swamy+katha+in+telugu+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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10474 5816 bytes
SHA-256: 96bda61bda859135d91fca9986472fe94249105b96202b407ce8d8a85a669bea
font_01_sfnt_off00011838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11838 3060 bytes
SHA-256: 305865b934c9d6b35f069d24ac209eff3177de5e7776c5117fbc80228eb2da7e
font_02_sfnt_off00012516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12516 13452 bytes
SHA-256: 19c0713911c11f10f6e3cee0829e00f42681a24d8a2b859c11e7be0980b3d232

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