Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e23c69d0b170c3d…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 10:00:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 973c0fc250a5ab647ffb2fde5882feae SHA-1: 1cdd4ed73eaad2e8935823dcc9e47be86abd6026 SHA-256: 9e23c69d0b170c3d5ddb41a13ad01479f07b6339d666bd79eb78324b4d0cd59b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to a malicious domain, masquerading as a game hack generator. The primary lure is a 'Coin Master VIP Hack' which directs users to 'netcdn.tw'. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and redirection behavior are strong indicators of malicious 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/406889139/coin-master-vip-hack-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/rbxvault-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-easy-and-fast-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-how-to-get-free-in-game-items_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-robux-on-roblox-using-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-cheat-in-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-robux-for-free-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-skin-roblox-wiki_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-games-ios_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-do-speed-hack-on-roblox-mad-paintball_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-minecraft-bedrock-server-hosting_GM479516143.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_off00002db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB2 22448 bytes
SHA-256: 41775b7e63d5e6f08a1b5a9701f08c8b2f135bd763076ef6e70945d37fdbf203
font_01_sfnt_off00005fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA8 18312 bytes
SHA-256: 0a7f80164f47993a31654aa5e92e367b06b27cea90ecf05ee4853a688796fefb

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