Malicious PDF — malware analysis report

Static analysis result for SHA-256 468b7931e1d5cddb…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 05:22:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 150f743af91a0862a4068000714f1d3a SHA-1: 068670fcc2bd5065e4dc8b26e585190261a1ab91 SHA-256: 468b7931e1d5cddbd0b8859d634b501bef0f083aa6f23cd0332eefa0ffcd4616
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks and generators. The primary link, https://netcdn.online/app/431946152/free-games-like-roblox-game-hack, is identified as a malicious redirector. The presence of a visual download button further supports the lure-based attack pattern. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/free-games-like-roblox-game-hack In PDF document text
    • http://elib.acls-indonesia.com/repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/moon-active_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/instantrobux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-codes-no-verification-2021_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_004_off00005005.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5005 25372 bytes
SHA-256: 7a6b073368c2fea100f9e6b6ee14b3ef9792205b91105b5a9a123f348884e75c
font_01_sfnt_off00008a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3C 18724 bytes
SHA-256: c52aceaf3bf2f28584fb8940f828c012a6342ba7c3f090d8a14e40bb36c01879

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