Malicious PDF — malware analysis report

Static analysis result for SHA-256 611870d9e8efc16f…

MALICIOUS

PDF

33.7 KB Created: 2021-06-27 22:17:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c3550b499dfcd6e9ecb642c94fa2c6d7 SHA-1: 095da23326e60a96617ac9ab2dd51ac611c97036 SHA-256: 611870d9e8efc16fbdd602f5cae03178fbf7381bbcbaf924af33bdb492f4b60b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external URLs, including a known malicious redirector, disguised as "free generators" and "game hacks" for popular games like Roblox and Coin Master. The presence of these lures and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document structure and embedded links strongly suggest a phishing or redirection attack.

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/roblox-ad-free-game-hack In PDF document text
    • https://trustindoutama.com/assets/CKImages/files/hack-a-game_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-your-old-hacked-roblox-account-back_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-cloth-goku-ui-free-roblox_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/best-free-models-on-roblox_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/roblox-free-login-and-password_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/robux-generator-free-no-survey-or-download_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-minecraft-capes_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_off00002e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8B 21936 bytes
SHA-256: 6caaa50fe58ba1a1c01fc677039d66a915157810a2b5a34d28cf68f2d86cf39d
font_01_sfnt_off00005f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0F 18824 bytes
SHA-256: 8f1e867239a8406adcf93af909bfd641c452e46c4bcbbe71c4de3afb12e53536

Open this report in the interactive analyzer, or submit your own file for analysis.