Malicious PDF — malware analysis report

Static analysis result for SHA-256 f669db2732d17572…

MALICIOUS

PDF

50.3 KB Created: 2021-05-15 13:59:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8ce5b9d93f44a9ac53e9248fe5b2b31f SHA-1: 192e2d591421e5a06468a53f351042575fd68805 SHA-256: f669db2732d17572f45916fcd67398079ab862f9e0091822223e5976fd555bba
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for a game hack redirect lure. The primary URL leads to a page offering a 'Coin Master Unlimited Spin Hack Apk', suggesting a social engineering tactic to trick users into downloading potentially malicious content or visiting a phishing site. No scripts were extracted, but the presence of embedded URLs and the nature of the lure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/coin-master-unlimited-spin-hack-apk-game-hack PDF link annotation
    • http://j-cook.pro/images/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://j-cook.pro/images/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://j-cook.pro/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://j-cook.pro/images/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://j-cook.pro/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000483b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x483B 26364 bytes
SHA-256: 54d56349f788db552ef02c0df3d8d096fce8d3af1ffbc8fbe16f071d3d686da9
font_01_sfnt_off000082d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D7 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C75 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off0000a100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA100 18584 bytes
SHA-256: 1f0ff171152404fee35ded77e01b9724573d4b9224166749f75d1c5d7d8d4db8

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