Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa72d2cd6c40c9a…

MALICIOUS

PDF

44.6 KB Created: 2021-05-11 04:02:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cb82383f011aae3259e356dd8ea9622f SHA-1: bd718b88042f6fd5d3f55580a7b9df1089228f0b SHA-256: 5fa72d2cd6c40c9a6930f14bd29030f49f12191344c0f1ecf6d40580c0d82332
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to known malicious redirectors and websites that promise free game-related items. The document body and embedded links suggest a lure for users seeking in-game currency or hacks, which is a common phishing or malware distribution tactic. The presence of multiple redirector links indicates a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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.xyz/app/431946152/free-robux-clothes-game-hack In PDF document text
    • http://rainbowbuddha.academy/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-free-spin-generator-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_off00004c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C90 26708 bytes
SHA-256: e32fc1b352e546fccb447cc0cf2e47d25ad5336e1b046ae96728915486006bd3
font_01_sfnt_off000089a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A7 19164 bytes
SHA-256: 93244ccaa23b01b4f11031ab292ecb20032d581eebda191b5ca1259f9335a136

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