Malicious PDF — malware analysis report

Static analysis result for SHA-256 935e6be214210518…

MALICIOUS

PDF

45.2 KB Created: 2021-06-11 01:12:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9ff5b0a28c394802523372bbdf1e8470 SHA-1: c2ecc8d4c49d7957544c4b67c299ee49d78cbc41 SHA-256: 935e6be214210518c6bfd425cedfc4374b51dd70363e519945dcc73c0c74b298
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The ML classifier strongly indicated maliciousness, and the document contains embedded links and a visual download lure. The primary URL, https://netcdn.tw/app/431946152/tampermonkey-free-robux-game-hack, suggests a lure for a game-related application, likely a downloader or trojan. The presence of numerous other URLs further supports a phishing or social engineering attack.

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/tampermonkey-free-robux-game-hack In PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-coins-coin-master-2021_GM406889139.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_off00005298.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5298 25236 bytes
SHA-256: 60fbef8bb959d90626666913a06e18e041c27bfda6fa9659b3d5e33f4b4fdcff
font_01_sfnt_off00008bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC7 19028 bytes
SHA-256: abd88e31f320a5775eabc58c038272ff2735d1cc664996312dd3b3054878678a

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