Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ccde7d8b74689c…

MALICIOUS

PDF

33.6 KB Created: 2021-07-01 20:46:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 584ad76dddc3213bcfb1efd105235eca SHA-1: adb2ce5d50a15523432110a9fe634f5b93c09989 SHA-256: 63ccde7d8b74689cf0b7c609ade527473e1a2bd63c37e717bcee9209902f9fee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded links and a lure related to game hacks for popular titles like Roblox and Coin Master. The primary link, 'http://netcdn.co/app/431946152/roblox-ban-game-hack', strongly suggests a malicious intent to redirect users to potentially harmful content or malware downloads. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-ban-game-hack PDF link annotation
    • http://licko.cz/files/coinmaster_GM406889139.pdfIn PDF document text
    • http://licko.cz/files/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://licko.cz/files/hack-knife-roblox_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/rpg-world-hack-roblox_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://licko.cz/files/how-to-hack-prison-break-roblox_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/cheats-for-rocitizens-on-roblox_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/robux-free-fr_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/roblox-mod-free-shopping_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/whats-a-code-for-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://licko.cz/files/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://licko.cz/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://licko.cz/files/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://licko.cz/files/how-to-get-free-robux-real-2021-500_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/pin-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://licko.cz/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://licko.cz/files/coin-master-free-coins-link-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
font_00_sfnt_off00002e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E72 22304 bytes
SHA-256: bc09b22a05ded3780bf1035f256c5a3b262912d313f44bb21a87f25fa860076f
font_01_sfnt_off00005fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC5 18484 bytes
SHA-256: 9d5f4934e3fc36eeac5b6b5332195d377a7f7204d7b6b5eef7fa0f4bf1a7998e

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