Malicious PDF — malware analysis report

Static analysis result for SHA-256 140f4e0a213f6cc3…

MALICIOUS

PDF

44.2 KB Created: 2021-05-16 21:38:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 012f049a2afcbc4b481aa3dadfee0071 SHA-1: 305eaa61f180c9f929843500d5486508676db2b6 SHA-256: 140f4e0a213f6cc3fd90cf9fc5a639b57b3ce817520f7c981063d19d18eaac41
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for linking to a 'free generator / game hack' redirector, specifically pointing to a URL associated with 'free Robux'. The document body, though heavily obfuscated, contains similar references and the primary malicious URL. This suggests the document's purpose is to trick users into visiting a potentially malicious site by promising in-game currency or hacks.

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 https://netcdn.xyz/app/431946152/free-robux-no-verification-needed-game-hack PDF link annotation
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/moon-active_GM406889139.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.midrarreservations.com/uploaded_files/userfiles/files/roblox-royale-high-diamond-hack_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_off00004b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B32 27280 bytes
SHA-256: 9393286e5aa6effe664dc6c438af70d7aaca821e0348e37e12cbf2ba1851a322
font_01_sfnt_off000088f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F9 18776 bytes
SHA-256: d142001b9e8124b93d34dd5eb493ac1502906b177ba9fa7077e4038994baf40d

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