Malicious PDF — malware analysis report

Static analysis result for SHA-256 915daadf66555248…

MALICIOUS

PDF

45.1 KB Created: 2021-06-11 04:38:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29d9d6327bbb58ea329676419b0d9884 SHA-1: a4ee8202379b5c19e8aa192a3e4972ce07836f55 SHA-256: 915daadf66555248a17bd75e597f4a9c28a2d107f7538845531246db3e5b8d78
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "game hacks" and "free generators". The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lure users to malicious websites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-hack-how-to-get-everything-free-on-catalog-game-hack In PDF document text
    • https://kldcardio.ru/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://kldcardio.ru/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://kldcardio.ru/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://kldcardio.ru/images/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://kldcardio.ru/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://kldcardio.ru/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://kldcardio.ru/images/roblox-hack-tool-cheat-hacker_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/cute-roblox-outfits-for-girls-and-for-free_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://kldcardio.ru/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://kldcardio.ru/images/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://kldcardio.ru/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://kldcardio.ru/images/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://kldcardio.ru/images/tiktok-free-jazz_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D3 24704 bytes
SHA-256: 09b9b273095f85065b27b74f8465b976541dea90c640a41dab112221a4aa51ae
font_01_sfnt_off00008a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4B 19484 bytes
SHA-256: 703e3caa61778f74b0dc0ce4f88e987cc20a5887ca69ddde15a8bcd736d0dfb4

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