Malicious PDF — malware analysis report

Static analysis result for SHA-256 896359e53218133b…

MALICIOUS

PDF

40.3 KB Created: 2021-05-25 10:03:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 637dc6b19142918ee63e7d3d8385b4a2 SHA-1: 80dede36138b49ac89959b658c59ff97916a7d1a SHA-256: 896359e53218133bda829b6bc4b2c2f220a283cf928fd74d18ac527ea5b2cc5e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high-severity heuristic indicating it's a lure for game hacks, specifically targeting Coin Master. It embeds multiple URLs that likely lead to malicious content or phishing pages, masquerading as generators or free spins. The document body and embedded links reinforce this lure, aiming to trick users into clicking through to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7768

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/406889139/how-to-hack-coin-master-game-hack PDF link annotation
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003707.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3707 26060 bytes
SHA-256: 7c0ecf76a65b65e56b6f44cbab57fd5f81472936f305306da5345cae6d77001a
font_01_sfnt_off0000727e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727E 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00007d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5D 17880 bytes
SHA-256: 811ddb8557bc0f5be85009fa6d5ae0baa2b7fc09c58d91c5790597872cecd122

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