Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c88744c6bfe974…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 17:13:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 06f5be93c1b6731e1ce796ceb5abadb1 SHA-1: a293a2359227e50d0cbe876d7f5701db3d3160e7 SHA-256: e8c88744c6bfe974a2c7dc7f6541d8f7d979081cc03d0c5e365c33fe24b310c2
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/431946152/easy-how-to-get-free-robux-game-hack PDF link annotation
    • http://stitqi.ac.id/website/repository/krnl-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-hack-any-roblox-game-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/tiktok-free-fans-2021_GM835599320.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/minecraft-java-server-hosting-free_GM479516143.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_off00002ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA5 22052 bytes
SHA-256: ed7919265192fc3d2ec8615586734c99587722861a8792f0a939b4095320f172
font_01_sfnt_off00005f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3F 19164 bytes
SHA-256: e4d500aa9da98b19d28a47e4f9041d07d7faef15145a0cabdc472361f1a11a9e

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