Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04cd30e57869f4c…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 23:12:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: bfc19b588c5d318a68ed964435e38530 SHA-1: e8b88be826dd46450209f616fb0a7f4934f1aa74 SHA-256: f04cd30e57869f4c676d46ae4b17080530b53f8892617342018ca416cc35a9a4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "free generators" and "game hacks" for popular games like Roblox and Coin Master. The primary redirector URL is https://netcdn.online/app/431946152/roblox-play-as-guest-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.online/app/431946152/roblox-play-as-guest-free-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/tiktok-free-movies-site_GM835599320.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000503a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x503A 24948 bytes
SHA-256: fb21f036ebf1d780ab906eb34feddf5a60874b62d07b3474aa0fc174c2c526f3
font_01_sfnt_off000088b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B2 2832 bytes
SHA-256: 78e89c8f621d90011ffb7a2107d701d4cdf090a2f2cf42d5a65297289afc8805
font_02_sfnt_off00009263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9263 18756 bytes
SHA-256: 536746ef029180016b10674303df9b70bf6b2620163374f544b37f1543ff13dc

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