Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d5ae5e7929de1e3…

MALICIOUS

PDF

41.4 KB Created: 2021-05-17 21:30:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f8f383efd8a8c6f2609b7b08d8a1bd8 SHA-1: a78214c1de979e0f74c992ff125083e4ee080e3d SHA-256: 5d5ae5e7929de1e3f551c1cd5bf8a1b8aed4511808ab41b4c0472b5e7d942c13
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox. These links ultimately point to infrastructure designed to lure users into downloading further malicious content or engaging in fraudulent activities. The presence of multiple redirector links and the ML classifier's high confidence score indicate a malicious intent to exploit user interest in game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/com-roblox-game-hack In PDF document text
    • http://bilhetim.com.br/images/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://bilhetim.com.br/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://bilhetim.com.br/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://bilhetim.com.br/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-robux-easy-and-fast_GM431946152.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_003_off00004837.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4837 24520 bytes
SHA-256: f4000a599cbe9730b7cbfaf80a720a583af80afbf404da762947db49ac2ed7fc
font_01_sfnt_off00008043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8043 18044 bytes
SHA-256: eff775d92ef8bd491319eac85ef909b2198b057cd93ad57b214b1357dcb648b5

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