Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8bb3a180bbc669a…

MALICIOUS

PDF

42.9 KB Created: 2021-05-13 07:30:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 11e67f058319bbd07cf3fd8a538e0e8f SHA-1: b53dbe7c792719edc29901a880e181b410498544 SHA-256: e8bb3a180bbc669a8ba94d1a673d3857d52615246062cea7f20c1493d41c567d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to game hack and generator websites, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were extracted, the presence of these lures and the ML classification suggest the document is designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/coin-master-hack-2021-game-hack PDF link annotation
    • http://pspmrsmbpulau.com/opac/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpulau.com/opac/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpulau.com/opac/repository/get-minecraft-for-free_GM479516143.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_off00004bb0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB0 25028 bytes
SHA-256: bb6237f2e2b40fbe841a04bd5c54815620e00aee4eb0e30355206d48c135bae9
font_01_sfnt_off0000859a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859A 18116 bytes
SHA-256: 17974cef81917e5ef69542194afa433aff210173cc902887fbc2b56a9328dd03

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