Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb869ff36634765…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 09:20:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 789503f2a44e541d151c0d0fd6315f6d SHA-1: b4e3f4eeb72b69b9ef9a5a2d6b08352afe311bd0 SHA-256: 9eb869ff36634765b130a3f09580570676decf13a2a2f1b325b0295a56b12993
160 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure at http://netcdn.tw/app/479516143/free-minecraft-mods-for-pc-game-hack. This lure is designed to trick users into believing they are accessing game-related content, likely leading to further malicious downloads or phishing pages. The presence of multiple similar URLs reinforces the phishing and redirection 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/479516143/free-minecraft-mods-for-pc-game-hack In PDF document text
    • https://www.legclub.org/uploads/files/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/fill-in-form-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-village-4_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/actual-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-robux-youtube-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-animations-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/master-coin-hack_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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
font_00_sfnt_off00003529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3529 22904 bytes
SHA-256: 3987b61f6720ca4e198c9662429f552c46aca9156d1625659a364070c16ca3a6
font_01_sfnt_off0000681d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681D 18324 bytes
SHA-256: ee1c19855408b16e2ffe5bd070dcc18f77e221a6cdc63e4ddeb47ffa0706d813

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