Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e02c6c39f9dbdf8…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 15:12:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c1cadacd517745ec3150d902c8cf985d SHA-1: 5eb5a89f0631099109f83ed4d8e8995aa4ff51ae SHA-256: 4e02c6c39f9dbdf88d39a526dda87a1e941aec360cc0767819243612db5b477d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to websites offering "free generators" or "hacks" for popular games, indicating a lure for potentially malicious content. The presence of embedded URLs and the ML classifier's high confidence score suggest a malicious intent to redirect users to untrusted infrastructure. Although no scripts were extracted, the document's structure and linked content strongly suggest it's a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/406889139/coin-master-invite-friends-free-spins-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hacks-for-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hacking-for-games-on-android-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-a-free-skin-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-hairstyles_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/dragon-ball-online-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-too-no-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-hack-pc-download_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/10k-likes-on-tiktok-free_GM835599320.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/wheel-decide-free-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-costumes_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
font_00_sfnt_off00003085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3085 22288 bytes
SHA-256: 7d4920c9f232c4b0e5cf14e6d760888ac246e800b50b0ff24df1243351b75223
font_01_sfnt_off00006206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6206 18464 bytes
SHA-256: 0edd4b42a4eaf7578d93547820b505cfd877f3b4872ccc3a0afbf0a012a885aa

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