Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db7921246a74720…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 03:04:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 283ee90c16eaae0da1a6aaad9ee5c1b2 SHA-1: 276bbb1c9223e417ab7fc5427dc82b117e66e5ec SHA-256: 9db7921246a74720ccb744998115a35db96d377be18aa473ceebbbca07e6813d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to websites offering "game hacks" and "free spins" for popular games like Coin Master. The heuristic firings indicate these links point to known malicious redirector infrastructure. The document body, though partially garbled, contains similar lures and URLs, suggesting a phishing or scam attempt designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-free-spins-links-app-game-hack In PDF document text
    • https://pompesfunebresleveque.fr/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/roblox-ban_GM431946152.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://pompesfunebresleveque.fr/images/best-free-robux-sites_GM431946152.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_off00004b3c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3C 25108 bytes
SHA-256: 5896ab11503265cfe89ea123cadc7dbb66707696672f3d09893708ae04a9eb91
font_01_sfnt_off0000843d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x843D 18056 bytes
SHA-256: 82bd5e5fc9f9c8e10db102fb3f3c15aafc022ab197dd07e70821ea88e25dcd6f

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