Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3ff008a1dfd5da…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 14:05:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ee4ffa9fdb381aea1253ed458f6c0a48 SHA-1: f104d415069705e2a0bfa717eb93d26f34a2b79c SHA-256: 6e3ff008a1dfd5da89d599c131c499ff15524c3f090e42edfb4841f6f244fdab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to what appears to be a malicious redirector infrastructure, disguised as game hacks and free currency generators. The ML classifier strongly indicated maliciousness, and the document body confirms the lure of 'free generator / game hack'. The embedded links likely lead to a second-stage payload or further phishing attempts.

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/406889139/free-spins-coin-master-game-hack In PDF document text
    • http://itc-nekretnine.hr/files/roblox-login-hack-for-robux_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-como-tener-robux-gratis-2021-el-hacker-gato-loco_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-free-robux-giver_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-fan_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/kachifpro_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/400-robux-for-free_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-how-to-get-admin-for-free_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-hack-apk-2401_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-cheats-in-roblox_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/infinity-jump-roblox-free_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/birds-hack-on-roblox_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_off000030df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DF 23032 bytes
SHA-256: 8e0e51210b74056b3b786b89f6eb98866c7ced93095c72d95942945eb5b02be5
font_01_sfnt_off0000648e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648E 18176 bytes
SHA-256: e8ec895f495d139acdb298d515a7ca0fffd25b58e102aa71b0a100d8abb1bbce

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