Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc446f90d7db3c59…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 11:12:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6b2bd38909e7711c83b40dd36881b1ca SHA-1: 533e4eeab14a5dedb1ccd11642388c9a0598cb4e SHA-256: fc446f90d7db3c599e28feacf72dbc46b5f901f1dfdfe736645a29873638328f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary redirector identified as malicious. The document body and heuristics indicate a lure for game hacks and generators, aiming to trick users into visiting malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or scam campaign.

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.co/app/431946152/free-camera-roblox-game-hack In PDF document text
    • http://library.futureuniversity.com/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-hacked-by-blueroes_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-btools-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-getrobux-gg_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-reedeem-code-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-tiktok-followers-without-human-verification-2021_GM835599320.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/pokemon-go-free-cheats_GM1094591345.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-ban-proof-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/como-hackear-roblox-adopt-me-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-level-7-exploit-for-roblox_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
font_00_sfnt_off00002fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBE 22316 bytes
SHA-256: d6638130465a5a2f4bdfaee9bc57dbeb922fa5c88874be812cb0c36c7c841638
font_01_sfnt_off00006188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6188 18908 bytes
SHA-256: 4a9aeb34396ef900d2c0f2c10908cd8c6714053e088972ee8e05a7ee8135cb87

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