Malicious PDF — malware analysis report

Static analysis result for SHA-256 148ece75fca242a1…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 20:27:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ec1463837f8f08fd4f2dc8a0ebac8f4 SHA-1: 94f2609817671a039a179ebb2753c4192be6a637 SHA-256: 148ece75fca242a15840cb2d1fa6a50cb9d499ec04a41347d68bc44e76bf27f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and sites offering 'free generators' or 'game hacks'. The primary lure URL is http://netcdn.tw/app/835599320/tiktok-free-like-2021-game-hack, which is associated with malicious redirector infrastructure. The document's structure and embedded URLs suggest an attempt to trick users into downloading further malware or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/835599320/tiktok-free-like-2021-game-hack In PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hacker-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/pubg-uc-discount_GM1330123889.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-builders-club-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/pokemon-go-free-high-level-account-hack_GM1094591345.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-on-ipad-pro_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-mm2-free-godly_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-player_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-scam-games-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-earn-free-money-tower-battles-roblox_GM431946152.pdfIn PDF document text
    • https://launchpad.net/free-tiktok-fansIn 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_off000030e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E6 23000 bytes
SHA-256: 7faa563b1ef274b69d4fb0754f57086731d13f18d7be7a6a9969e0f598ae63ef
font_01_sfnt_off0000648e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648E 18376 bytes
SHA-256: 7a1b44343182051b3d32955f2d92a289fb76b1a8cf0b422ef11767c5070bb14d

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