Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2c9466e1a4cc1e…

MALICIOUS

PDF

49.2 KB Created: 2021-06-11 02:19:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 95ca7778ad2d5b845a5761627193aad6 SHA-1: 3658a85969d762ba8045de3b4224c0888ec388d0 SHA-256: 5c2c9466e1a4cc1e03d9c9f3dd8f0451beb9f4c4004e1e46d4ad7dce6806cba1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are identified as malicious redirectors, specifically promoting 'free game hacks' for Roblox. The document body and embedded URLs strongly suggest a lure to trick users into visiting these sites, likely to download further malware or engage in scams. No scripts were extracted, but the presence of malicious links and the ML classification indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/elysian-roblox-hack-free-game-hack In PDF document text
    • https://bullyinformate.org/images/roblox-cheat-table-scripts_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/22-500-robux-hack_GM431946152.pdfIn PDF document text
    • http://bullyinformate.org/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/free-afro-roblox_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/free-robux-codes-generator-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/roblox-free-rthro_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/roblox-pro-hack-script_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/best-ways-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/free-roblox-mad-city-hack_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/hacking-someones-robux_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/new-free-level-6-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/free-robux-no-waiting-or-loading_GM431946152.pdfIn PDF document text
    • http://bullyinformate.org/images/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://bullyinformate.org/images/hack-roblox-kewlaid_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/bad-busiiness-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bullyinformate.org/images/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://bullyinformate.org/images/free-roblox-codes-not-used_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/free-groups-to-join-roblox_GM431946152.pdfIn PDF document text
    • http://bullyinformate.org/images/adopt-me-roblox-hacks_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
stream_004_off000050a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A3 27556 bytes
SHA-256: 622a5a9961a0b7cbf0503bb5ea4ef5cf38a7d9ebe5e4dc31b475d3ae2d150813
font_01_sfnt_off00008f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F82 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C94 18644 bytes
SHA-256: eb62d86c0f24f1bfcf308b292e4be7799f288c693df96f021c08c48581aac171

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