Malicious PDF — malware analysis report

Static analysis result for SHA-256 306981f9a9575c14…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 17:22:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 05b400be1a414fea96acaa9a843c0f9a SHA-1: f8754d7aa0aa3c0bd0695f5acae8327421058aa3 SHA-256: 306981f9a9575c142d14586ce0501dff24eb20ac757253c57bb24ffa3482e1be
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free game hacks and generators, which is a common social engineering tactic to trick users into clicking malicious links. The document contains multiple embedded URLs, with one identified as a known malicious redirector. The primary purpose appears to be directing users to potentially harmful content or further malicious downloads.

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/835599320/tiktok-viewer-free-game-hack In PDF document text
    • http://katalog.gemalibrary.net/repository/free-tiktok-video_GM835599320.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/body-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/febuary-2021-roblox-hacking-client_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/mc-hacks_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/app-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-without-human-verification_GM406889139.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_off000031f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F3 22416 bytes
SHA-256: e04fc4fca5feba8047a474e78a3bb79c358ae2833a4be9d16fc791fccfa5e1f7
font_01_sfnt_off00006410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 18268 bytes
SHA-256: 93eee72dea4227dcc5800322e3f0c8a3d1ec1d67827839ae5243ce7f2512eb80

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