Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d6438dce097633…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 12:25:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f222842f444d7c35d6f915c0612970ef SHA-1: 49ff1d25b407509236e4e95cb1fb18b84c218bb4 SHA-256: a9d6438dce097633bbb9d66666e9aafd2b16bb6675a5e159c32a3cc0035796f7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and lures related to game hacks, specifically for Roblox. The primary link, http://netcdn.co/app/431946152/roblox-island-2-hack-game-hack, suggests a malicious redirector or download page. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a social engineering tactic to trick users into visiting potentially malicious sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-island-2-hack-game-hack PDF link annotation
    • http://autoskola-scp.com/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/triga-cheat-engine-for-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-hack-2021-no-scam_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/gamefreaks-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/rbx-free_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-hat-roblox-codes_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_off00002cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF0 23068 bytes
SHA-256: aefa5f47911c41f2161623cd90909cf14545bb6e322ee84fb50e6cbc1bd242b1
font_01_sfnt_off000060cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CC 18956 bytes
SHA-256: 3ab343cce7cf8c537b9860ba9262fa8be6fa50712ac2bbb2c06d04eb73d3ac1a

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