Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e9bf09c2f2d2077…

MALICIOUS

PDF

41.8 KB Created: 2021-05-10 16:33:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dfead3003c28c829de8df78d6541e2ea SHA-1: ee35c0ba27c3bc42d57e8a32ca4e375b0ba4f9e3 SHA-256: 0e9bf09c2f2d2077bb010e80015e4e5f1af3166a1feac192e8ceb1e941fa78ec
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF document contains embedded links and displays a fake CAPTCHA to trick users into clicking them, likely leading to a malicious website or download. The primary lure is related to 'free game hacks' such as Robux or Coin Master spins. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit user interest in free game items to redirect them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/431946152/codes-how-to-get-free-robux-game-hack PDF link annotation
    • https://www.alarqam.ae/userfiles/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-hack_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_off0000493b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x493B 24224 bytes
SHA-256: 3fe75d3193a3768e940d56b9d407ee58cc9c439397ab34790eb84d9ba582b02f
font_01_sfnt_off00008065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8065 18456 bytes
SHA-256: e7ed60d24a78ba6057de20e743a58d73d760a91b60c41324c250f3bd6f119d62

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