Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf92f0a5e9fc8252…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 12:14:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cc1af4e11db6c342db676b49caea820d SHA-1: 105e3581d5bb0fcd7b2ebd9b5b653008b4b69785 SHA-256: bf92f0a5e9fc825280c2233d0825f8dc90844c0da661bd96eb3f2ba053c80e50
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/479516143/minecraft-windows-10-edition-free-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/how-to-get-a-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/mistplay-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/gratis-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-reddit-hacks_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/get-free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-review_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-lua-executor_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-hacks-in-roblox-no-scam_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/spare-api-roblox-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-2-roblox-credit_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/best-free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-robux-for-free-legally_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/i-got-hacked-on-roblox-what-should-i-do_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_off00003007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3007 21372 bytes
SHA-256: 203faeba6c18a3ec5396256154befd25a32fa132b52c70418acf887f24d2593e
font_01_sfnt_off00005e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6B 18812 bytes
SHA-256: 90006a4b8e57a38eddadfbaa613c320342a6ca665e14a1c59acf48d7d1de43f2

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