Malicious PDF — malware analysis report

Static analysis result for SHA-256 d25e2c5cf7895073…

MALICIOUS

PDF

32.3 KB Created: 2021-06-23 05:25:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 55fa62fbcb650a7a28c4189928edee19 SHA-1: d00755cc32689e1a98511bddeaa6372c5f46dcad SHA-256: d25e2c5cf78950737c9ce4f7d72bb805b9721089918b2773fb61aac9889bce54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector URL, which is associated with malicious activity and lures users with game-related cheats and generators. The document body explicitly mentions 'Roblox Generator' and includes a call to action to access it. While no scripts were extracted, the embedded URLs and the nature of the lure strongly indicate a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/google-free-games-roblox-game-hack In PDF document text
    • http://gts.edu.gh/library/repository/ropa-de-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/tix-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/http-hack-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/ro-ghoul-script_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_off000029c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29C0 21864 bytes
SHA-256: ef88a64717bcf0040888c72d7dea725669c58810b3796ea61dddc64391efc3b0
font_01_sfnt_off000059e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E4 18908 bytes
SHA-256: 7ccb8546fd98c0f670a05176bc36f911579de88b973146985fc8b20e5b8f3db4

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