Malicious PDF — malware analysis report

Static analysis result for SHA-256 36918ba08681cf45…

MALICIOUS

PDF

34.4 KB Created: 2021-07-08 01:11:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3dd25235f2870d3d84123ff2357e429f SHA-1: 90d91153709635ea501697707aa6a3810cbae006 SHA-256: 36918ba08681cf4583226cbc6fc794cb1f5497d7e6c75033863bf2f92de50a54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'game hacks' and 'free generators' for popular games. The document body and extracted URLs strongly suggest a lure-based attack pattern aimed at tricking users into visiting these malicious sites, which likely host further malware or phishing content. No scripts were extracted, but the embedded URLs and heuristic firings are sufficient to determine the malicious intent.

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/431946152/dailyrobux-game-hack In PDF document text
    • http://librarystkippgribl.com/repository/free-games-with-gamespasses-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/do-free-robux-scams-work_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/cool-roblox-hacking-them_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-do-you-be-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/tiktok-free-view-iphone-horizontally_GM835599320.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-spins-on-coin-master-cheat_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_off00002ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC5 22956 bytes
SHA-256: aed23370b1de59002701e2c4213e68331d8169574882797adbd4bdf2c25ec766
font_01_sfnt_off00006165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6165 19092 bytes
SHA-256: 319a3b741e60406540a19adb70d742732d8bf817a9bc58f36e4d58ba7e1a6a2d

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