Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c7f04e939eaaf4…

MALICIOUS

PDF

41.5 KB Created: 2021-05-12 15:35:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e63bc51ecb9980ddf4799b874a8e66bf SHA-1: 2ce5d92e7a4d320fc2df8ccc4a0dd0aa1b3129d2 SHA-256: 03c7f04e939eaaf4759cb972c22b0667cbee2d674734f8ca4f4c0e0982155e2c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed to lure users into clicking on links related to game hacks and free currency. The primary URL, https://netcdn.xyz/app/406889139/link-for-free-spins-on-coin-master-game-hack, is presented as a direct link for free spins on Coin Master. The presence of these lures and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful websites.

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/link-for-free-spins-on-coin-master-game-hack PDF link annotation
    • http://www.gadanie.lv/images/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-vpn-for-minecraft_GM479516143.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_off000049a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A6 24092 bytes
SHA-256: 4bf3639f5dd8a1bd63929f63f31d278054e1668df31b4c3ec67286a843c43a90
font_01_sfnt_off000080b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B1 18056 bytes
SHA-256: 722d781e478cd0d1a4785e673d05427d87221dd2f44d1d4595ffa323240eece4

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