Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6a759b9a4051f8…

MALICIOUS

PDF

37.9 KB Created: 2021-05-23 19:15:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 52a0048f80ee09afc06a420ed4bdacac SHA-1: 69f9f6c61ce1bb4892bce3326fd33b09ff03b044 SHA-256: 0c6a759b9a4051f866ea141b9668952bb45df131a2efc856ed3a8e69927592d8
82 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, specifically pointing to the URL https://netcdn.xyz/app/479516143/free-minecraft-servers-to-join-game-hack. This suggests the document is designed to trick users into downloading or executing further malicious content. The presence of multiple related URLs reinforces this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.xyz/app/479516143/free-minecraft-servers-to-join-game-hack PDF link annotation
    • https://leechan.cn/Public/upload/editorfiles/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://leechan.cn/Public/upload/editorfiles/roblox-www-com_GM431946152.pdfIn PDF document text
    • https://leechan.cn/Public/upload/editorfiles/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://leechan.cn/Public/upload/editorfiles/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://leechan.cn/Public/upload/editorfiles/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34D7 28192 bytes
SHA-256: 6aa1454387b72397639b7428124c562ccc785d131aa6706d3e7c745cbe70ea48
font_01_sfnt_off000073bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BC 17992 bytes
SHA-256: f4dddb1eb99788babbc28e2933b16aea696a65c0930c8e69ff3f00d50dcb50ca

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