Malicious PDF — malware analysis report

Static analysis result for SHA-256 142a63226bb57621…

MALICIOUS

PDF

34.6 KB Created: 2021-06-23 07:55:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 959a707a588818ab9be083d8e0d8438d SHA-1: 25f819bc2b54ef267edf829908f0463a4529f34b SHA-256: 142a63226bb57621427d164a79c0fc0928e893f12e42b8fe1e6967f093a44671
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a malicious redirector, disguised as free game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/free-codes-for-heavon-you-decide-or-hell-roblox-game-hack, which is flagged as malicious. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely for further malware delivery or phishing.

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.co/app/431946152/free-codes-for-heavon-you-decide-or-hell-roblox-game-hack In PDF document text
    • http://perpus.i2s-learning.com/repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/money-and-ranking-hack-roblox-link_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/pastebin-robux-card-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-download-free-windows-xp_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-100_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_off00003052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3052 21944 bytes
SHA-256: 132e0e123c9d34ed18461b86ac1e5c87aba1dd09844479ac3f4c53f971eebb50
font_01_sfnt_off000060d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D7 19528 bytes
SHA-256: 77ce724e0b815b24f793f26ed036630e6889cab89e6ad69e6156219d225852b4

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