Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be00deff4e455c3…

MALICIOUS

PDF

43.1 KB Created: 2021-05-11 05:14:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0bd4b793fcebd4913c7cd332a5b368cb SHA-1: 7e3599d41035521bfc4572b522755efe940f6eda SHA-256: 1be00deff4e455c3c00b65c4715bb547a9dfbc562be49827cb4bac5c677e4e47
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators" for popular games. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the lure of free game items suggest a social engineering tactic to drive users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/479516143/toolbox-for-minecraft-ios-game-hack In PDF document text
    • http://schmittmusic.de/images/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/www-robux-com_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-roblox-accounts-with-robux_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_003_off00004d5b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D5B 25436 bytes
SHA-256: 13d2cd82897cdcbef35a941f9aa7d77c449ce797abcec5392a265c477ea8eaf1
font_01_sfnt_off000086df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DF 18152 bytes
SHA-256: 00efac36cff71ff299be5bc46999ebb3fdd16e50bdaeff84e7245ae46705892c

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