Malicious PDF — malware analysis report

Static analysis result for SHA-256 a659a2d0143090a7…

MALICIOUS

PDF

47.4 KB Created: 2021-06-09 17:13:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 650cf575d28eb8877b9b4c9c44a344eb SHA-1: 9db7f024988b51ddc8504f1f70e94143c2e2b689 SHA-256: a659a2d0143090a7ee33602da1d85fd96b58189811210798c969a8d0a89d620e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically pointing to a URL related to Roblox hacks. The document body, though partially corrupted, also contains this URL, suggesting the primary purpose is to trick users into visiting a potentially malicious site. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-hack-in-roblox-and-get-path-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-schrei-simolator-hack-script_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-no-survey-no-download-no-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-money-in-gta-5-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/abs-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/new-free-money-links-coin-master_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
stream_004_off000053d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53D1 27928 bytes
SHA-256: 9feed2754412c18be0041eb533f88dd9820d6773dfb67986a5ab51e13361a0be
font_01_sfnt_off000094ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94EF 18944 bytes
SHA-256: 116b0f3b1a11404da174ba19115570a6c8eb297817cb6943560f1c9b415b99e2

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