Malicious PDF — malware analysis report

Static analysis result for SHA-256 21760469b37fcc4b…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 00:41:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ad3d697b37fb29e552ca9da69667dcac SHA-1: a80bb48a6ec954d81205eff5d8a0d23f95f14d79 SHA-256: 21760469b37fcc4bdee4e69f69e85f07da5f3f5366e7fd55157e812a623f8077
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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-cards-free-cards-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-poscod-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hacks-for-roblox-island-royale-for-bucks_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-no-survey-at-all_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-rewards_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/javascript-roblox-hack-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/assassin-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-jump-hack-code_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-cheat-engine-safe_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-robux-the-real-way_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-apk-ios-download_GM406889139.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_off00003010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3010 22816 bytes
SHA-256: 6613df8bafb182c3e53c650de89edf423e894b7b6c4f6d25050fd1e11bc4a447
font_01_sfnt_off00006355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6355 18172 bytes
SHA-256: 51a6fa1d0322029b9e2ca075150f5a08b3c54d54cadd2367ada3da490e26397a

Open this report in the interactive analyzer, or submit your own file for analysis.