Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e6b5477e667f52…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 22:01:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2673ec10348a3b45acfc791bf32fb3f1 SHA-1: 6590631084383147cab521eb81cd35158a28920d SHA-256: 89e6b5477e667f52dfb91bc29afada11cecec940b1716c816a2d9e40d1ad9323
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a call-to-action lure related to game hacks and free currency, strongly suggesting a social engineering tactic. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spin-today-game-hack, is flagged as a game hack redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-free-spin-today-game-hack PDF link annotation
    • http://fratellimazzoleni.it/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/cm-spins_GM406889139.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/i-robux_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://fratellimazzoleni.it/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004792.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4792 23964 bytes
SHA-256: 5d72808f1a526367f10a3c649d472dc93c379d27cfbdb83c2766ebaf808640f0
font_01_sfnt_off00007e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1A 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000087cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87CB 18240 bytes
SHA-256: a96ac7afd25cadbabafd1b9dbf0a180d0c1833ed2d07acb4363f122556c39d20

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