Malicious PDF — malware analysis report

Static analysis result for SHA-256 345dde4c46041f31…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 06:55:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e78de2fb2b9a60dae840f29b250f4bd6 SHA-1: 7fc624eb05f3360e8cdf946dd1d1ce9c2772a8f2 SHA-256: 345dde4c46041f31e09b63df22382a5e764cefc54bd84b179d496da06e6080cb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free Robux and game hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document body, though heavily obfuscated, contains references to these lures and the malicious URL, reinforcing the phishing and redirection intent.

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.online/app/431946152/robuxmatchcom-free-robux-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/roblox-phantom-forces-hack_GM431946152.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
stream_004_off00005137.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5137 24900 bytes
SHA-256: e4880a6eee1b41d05502e060f2cc9743d39f2c7a39cf0d4a72e8d7f55f25a561
font_01_sfnt_off00008948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8948 18772 bytes
SHA-256: f6f31f9c0c016e7c7e915a25ed0379b1b52a2107f0cf95fcb0a5807dd5e71c24

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