Malicious PDF — malware analysis report

Static analysis result for SHA-256 93941e0d4fd6f930…

MALICIOUS

PDF

74.9 KB Created: 2021-02-20 21:24:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 212461d23b1d90d4dad9b3858cbb591a SHA-1: 14f1ff8133d2455a9521eb2b2ad699bace339e0e SHA-256: 93941e0d4fd6f93067a2ab86988cba397b9ccae4620d947c6a52ea6ddb767c9e
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The document body, though heavily obfuscated, contains keywords related to 'minecraft windows 10 edition hacked clients', suggesting a lure. Numerous external URLs are embedded, many pointing to PDF files hosted on various domains, likely part of a link farm or redirection scheme to deliver malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=minecraft+windows+10+edition+hacked+clients PDF link annotation
    • https://cdn.sqhk.co/sigagegijej/jbjghgI/art_ceramic_tiles_egypt.pdfIn PDF document text
    • https://cdn.sqhk.co/gixixutiji/ggZYbhj/sanikejajox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497081/normal_6000fbd897d19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487186/normal_601e93e48388c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465394/normal_6005769a3353d.pdfIn PDF document text
    • https://cdn.sqhk.co/bipukawu/djfE8ia/63942429963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5fea16efade56.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/ehg7lji/50324492005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403959/normal_5fd8a0603e06b.pdfIn PDF document text
    • http://usejus.pro/ethanol_and_water_form_an_azeotropekhgfp.pdfIn PDF document text
    • http://malespw.xyz/17640140694znz3v.pdfIn PDF document text
    • https://todumubisopid.weebly.com/uploads/1/3/5/3/135312552/xogupaleb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413718/normal_60131bd5d088b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490375/normal_60087a251ce81.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/fghyaHC/dictionary_spanish_english_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE085 5464 bytes
SHA-256: 427197fac8a61f38ea230af001b00c6df77d28c3285a3279037c4225c7c45623
font_01_sfnt_off0000f33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33A 13660 bytes
SHA-256: bbf97b2921ba7f6a8a14ccb12b0d9457e21480201d83ae7b288e801119f854f6

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