Malicious PDF — malware analysis report

Static analysis result for SHA-256 367f87432dc5ab12…

MALICIOUS

PDF

35.0 KB Created: 2021-07-07 16:29:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: dc3c38bd53892daf7f89032075fb795e SHA-1: 19b681b2dd38a289a47f12573e2cca68625bf147 SHA-256: 367f87432dc5ab126efe63fc5d6df9844a9f763931ccdc185ead072503346c69
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and game cheat lures, indicating a phishing or scam attempt. The primary lure is a 'Coin Master Hack Generator' which redirects to malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious workflow designed to trick users into visiting potentially harmful sites.

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-hack-generator-game-hack In PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hacks-para-mad-city-roblox-rock-spolit_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-hack-in-entry-point-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-free-exploit-executor_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-download_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/rixty-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-script_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hack-apps-download-pc_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/jailbreak-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BE 23116 bytes
SHA-256: 5284477dd897221ff49ecdd8e0188a6eae8ea42a8af46f6f1a0f728663a31fcc
font_01_sfnt_off000066ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66ED 18004 bytes
SHA-256: c0219e91c786f445f8d29feb72b9315d78c28595d67c01a5a5d89ce704ae5adf

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