Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d5a34db0704f92…

MALICIOUS

PDF

81.2 KB Created: 2021-03-14 14:33:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ffaa8e01c29acaae5199f7d721e9f3a2 SHA-1: b4f9c8eeb22f5475010b020fb17c1043e3aa6e8e SHA-256: 92d5a34db0704f92040e5f723946defc7520d5f9c949ec25b8e0714608a84ccb
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to potentially malicious or phishing sites, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. ClamAV also detected it as 'Pdf.Phishing.Trojan'. The presence of external URIs suggests an attempt to redirect the user to malicious content, likely for credential theft or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/wix?keyword=nuclear+science+merit+badge+pamphlet+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461505/normal_5ff06cb68d719.pdfIn PDF document text
    • http://online-sistem.site/how_much_does_kirby_vacuum_costtpn4i.pdfIn PDF document text
    • http://nnorm-id.com/pmp_certification_guide9ethr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493876/normal_6007fceb6dabc.pdfIn PDF document text
    • http://gajonedorebuko.mywebcommunity.org/kohler_k241_engine_parts_diagram.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466379/normal_60480d695c763.pdfIn PDF document text
    • https://tewazaxapij.weebly.com/uploads/1/3/4/8/134873756/nutexu.pdfIn PDF document text
    • https://giweberemep.weebly.com/uploads/1/3/2/6/132682555/5181211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5fd104ef8a615.pdfIn PDF document text
    • http://goodshopsales.xyz/m_audio_keystation_88es_without_computer9o6v6.pdfIn PDF document text
    • https://xerazagas.weebly.com/uploads/1/3/0/8/130813913/9933534.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453741/normal_6040d66ce8e27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405925/normal_6033293a791cf.pdfIn PDF document text
    • http://francobusiness.com/free_business_accounting_classesswfk6.pdfIn PDF document text
    • http://zejirejajedudu.getenjoyment.net/lotoridusutirezarutuwame.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415950/normal_60019b2d57181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405930/normal_5fd60be8034b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://48e4e0df-78ce-4736-8797-27735e68dc67.filesusr.com/ugd/f3b179_4f1e1d81c22e438fba25e253127acbc4.pdf?index=trueIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_07409756bfc94e41a82624cef6356e6d.pdf?index=trueIn PDF document text
    • https://a5a8f6e1-24ae-425c-880d-6f4079e3c376.filesusr.com/ugd/035627_17fb31231b544953a59cc8e54a5ef68b.pdf?index=trueIn PDF document text
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB15 5680 bytes
SHA-256: a844e193ef24fd781d5b19e08b8030c8f5fa3d18c85135ec5e1a193d1f8ebc6d
font_01_sfnt_off00010e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3C 12128 bytes
SHA-256: fbd3c13dbf838c23cd6ae76975b3b4f42df5149a52be30c14f62abf2e810a666

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