Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d5b460268a9293…

MALICIOUS

PDF

37.7 KB Created: 2021-06-29 12:27:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bbcbc5ddf47d1096d2988b4fddd21281 SHA-1: 58bb20afc53f7c152e29f2d1bf8918a04c9db003 SHA-256: e7d5b460268a929354fbf121563cff530e91c841ca3b9f8f1132fc5938bdb0ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that are flagged as malicious redirectors, specifically targeting users interested in game hacks and free currency for games like Roblox and Coin Master. The presence of a 'download button' heuristic further suggests a lure to download potentially malicious content. The ML classifier strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://netcdn.co/app/431946152/roblox-hack-api-game-hack In PDF document text
    • http://lib.kunci.or.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-free-draw-2-alpha_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/players-involved-in-the-2021-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BB7 22848 bytes
SHA-256: ad6445c587ff3380ab0f5533614f1568007cd9d1d31dff653bc589c957e4fb4e
font_01_sfnt_off00006ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDE 18952 bytes
SHA-256: 2add751783e464f9dca59c1d4f9c29168d885836f6a67c0ef08b83f7425787fa

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