Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf9eb78c5cdea21…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 22:51:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 779cc620a65a41cf83bdb6eb1e983c4e SHA-1: f31e78f4ea2da73f35b14742fcb225045eead262 SHA-256: baf9eb78c5cdea216db5dbade1d9a40fc6eacc971cff3bb65b4ebb07f0f5119b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack lure. The document body and extracted URLs reinforce this, pointing to sites offering 'hacks' for games like Coin Master and Robux. The primary URL, https://netcdn.xyz/app/406889139/best-hack-for-coin-master-2021-game-hack, is likely the initial landing page for a phishing or malware download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/best-hack-for-coin-master-2021-game-hack PDF link annotation
    • https://sensorcamera-tw.com/upload/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/cpbildco-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-hack-ios-no-jailbreak_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_003_off00004792.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4792 24480 bytes
SHA-256: 7413375c913341efaf04cfd8816016a01a52fb2952921dd9f9b33a09e390ffd4
font_01_sfnt_off00007fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD8 18496 bytes
SHA-256: 2f7798fbfcbfb5517ad57b524e1a4311bf91dee141c38b7bf712946f2095f69f

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