Malicious PDF — malware analysis report

Static analysis result for SHA-256 61c116fd563aef3b…

MALICIOUS

PDF

44.1 KB Created: 2021-05-13 03:16:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 33556a9de09bea48091b2f9c0ec1b5eb SHA-1: ec7f87f40ffdb49012135808c4bbe48a8a61fa55 SHA-256: 61c116fd563aef3b5247eff435330d307430c650b8db32c5143f057f55bc9518
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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 https://netcdn.xyz/app/406889139/coin-master-game-hack-apk-game-hack PDF link annotation
    • http://autoskola-scp.com/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004839.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4839 25056 bytes
SHA-256: a416a75c341a463051d47c7b2d85c4540e59dd21d9765ac77541f1b6137ed165
font_01_sfnt_off00008096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8096 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A39 18152 bytes
SHA-256: a9beebf818d5886f30c9f2ca3dea49ae6ba882c6c1da3ca8fee2aac0910a50ab

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