Malicious PDF — malware analysis report

Static analysis result for SHA-256 3183599ae5e75b48…

MALICIOUS

PDF

50.8 KB Created: 2021-05-10 15:02:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 1975032f014f7fad7d8b42c7d1ea8061 SHA-1: 753618d065088ee11f3d6bd90e52f845bfff2a6f SHA-256: 3183599ae5e75b489dcfc7babde4bc76bc9a5bf3a62eddfaa446610cf5be846f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting game hacks and free item generators. The primary lure appears to be related to 'Adopt Me' and 'Coin Master' games, aiming to trick users into clicking malicious links. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack, likely intended to lead to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/431946152/how-to-get-free-pets-in-adopt-me-roblox-game-hack In PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://Buy.HoaxMC.comIn 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_off00004a38.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A38 39868 bytes
SHA-256: 6ffb9bf9580d6a03e63b05e919f2a94e80d0a1ccad637b41bd294cf5bca8e3a2
font_01_sfnt_off0000a2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E1 18916 bytes
SHA-256: ddf32d21812ca42913bb48f22a0284a59638f2c0abe9b9b8a3ace66687a9859d

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