Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15a8ca3ac5ae2ae…

MALICIOUS

PDF

31.4 KB Created: 2021-07-04 19:10:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 80e6816261b0f95713f37d398474dfc2 SHA-1: 20b2afac880574aad5fa515b5ddd13415fb858d2 SHA-256: e15a8ca3ac5ae2ae8ba73e5a86a109debae3b2be86953cde62b4215640d7afcf
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that are flagged as malicious redirectors, specifically targeting users with lures related to game hacks and free currency for games like Roblox. The document body and extracted URLs indicate a phishing attempt to drive traffic to potentially harmful websites. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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/how-to-earn-robux-game-hack In PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-cheats-for-operation-scorpion_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/which-pubg-uc-is-best_GM1330123889.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/best-free-robux-websites_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-girl-characters-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/despair-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/cheat-for-guess-sthat-song-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-sword-fighting-tournament-points-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-hack-script-list_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-earn-free-robux_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_off00002c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C48 21872 bytes
SHA-256: 3511312e99fd2bd66db1778a0c91c106bc26dc67b2d60d571b6eacf91710bc83
font_01_sfnt_off00005ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCB 18716 bytes
SHA-256: 530905e063423978ad0a3f191c74c52f09ab8f096361f7dcb0ecb4fc069da88b

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