Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b2646a78ec4f380…

MALICIOUS

PDF

36.8 KB Created: 2021-07-03 22:28:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 95cf7628b68f8b652014cdb92f25f8e5 SHA-1: c50293056d48dede6ce2f4d0e47daa6614d5bb2b SHA-256: 3b2646a78ec4f380361817bc6e733583d602d8054f63b61601233118515b3bab
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 0.9980

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.tw/app/406889139/coin-master-email-rewards-link-game-hack PDF link annotation
    • http://sttlets.education/senayan//repository/tiktok-free-98_GM835599320.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-badges-on-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-be-a-jailbreak-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/tiktok-free-unlimited-likes_GM835599320.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-texting-simulator-hack_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-guest-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/make-free-roblox-shirts_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-that-i-can-play-for-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/robux-apk_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-roblox-glitch_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/claim-gg-free-robux-by-roblox-events_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000037c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37C8 23232 bytes
SHA-256: 205e68540fe054f25eb78fc9135152261857bce48bbfddc5cfccc6ac456f2d05
font_01_sfnt_off00006c13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C13 18676 bytes
SHA-256: d5ffef980cf25ab836b8eb0c54625faafd2d07e4decf07a72859dc95eb3454f0

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