Malicious PDF — malware analysis report

Static analysis result for SHA-256 975f054d0a58da42…

MALICIOUS

PDF

78.2 KB Created: 2021-06-18 05:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ca021fb0257135f687bd97d768a8f53b SHA-1: ea2e975121f4e23647fb7c9b97258cf13c6e1c5d SHA-256: 975f054d0a58da42702b2187df1d6a7a758eecf3d74a05afe304a82746faeac8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a URL related to 'murder mystery 2 roblox script' in the document body further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fallsplat.se/file/9596347223.pdf In PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/1qh4vb6dorrrhkvmrttpa4ip1a/37397857765.pdfIn PDF document text
    • http://dgjst.com/upfile/file/42289199265.pdfIn PDF document text
    • http://savitapiti.org/ckfinder/userfiles/files/36525230585.pdfIn PDF document text
    • https://diaochue.vn/userfiles/file/vowugo.pdfIn PDF document text
    • http://stark-tools.ru/images/uploaded/87951903312.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/mc7j2t97b8u8pssf3e3netjqe0/43550755644.pdfIn PDF document text
    • https://egokituz.eus/files/galeria/files/73841998723.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/91791810136.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c3d14990b90---zawuloteguwedukodo.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/29051426733.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/3faa8762ad341abb0f64ce958324958d/wejamekadomuzula.pdfIn PDF document text
    • http://healthywithhart.com/res/file/7863960744.pdfIn PDF document text
    • http://train-in-japan.com/images/blog//file/33123244846.pdfIn PDF document text
    • https://isleo.com/i_photos/file/vagariwab.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb2e352983---wopafu.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/6faf87oa5m44s92rrf59nf7m81/14237253049.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=murder+mystery+2+roblox+scriptPDF 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BC 5456 bytes
SHA-256: 08dcf8df9231aa10a8f49ff2f78206240457fb9c356d8c3ed9a822176b82cad1
font_01_sfnt_off0001074b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074B 11000 bytes
SHA-256: 62033471558f97dfcc5d1590bd5da9512611516c5c17c7456d10aea1a4945fe2

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