Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9256c0b5278a7f…

MALICIOUS

PDF

52.4 KB Created: 2021-05-20 07:10:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 123212aa3236bb4ff48400c8d0ad817f SHA-1: 97c01d05b1e9fecc86df649dc65f4ec71130cf1e SHA-256: be9256c0b5278a7fc29a65f5a5ea0fdaa6284f29f85102b43b66c37a3920bb7e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to 'free generators' and 'game hacks', directing users to a suspicious URL. The presence of multiple embedded URLs, many of which are also related to game cheats and currency, further supports a phishing or scamming attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a potential for malicious JavaScript execution or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8646

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/479516143/how-to-get-minecraft-windows-10-for-free-game-hack PDF link annotation
    • http://sbm-nn.ru/images/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/pubg-uc-buy-in-pakistan-jazz-cash_GM1330123889.pdfIn PDF document text
    • http://sbm-nn.ru/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004850.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4850 25240 bytes
SHA-256: f4998c3f1995babae00a9a78021322987bf7dc4bc99dd22f9b2f397aa48a0eba
font_01_sfnt_off00008181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8181 8092 bytes
SHA-256: 9ba0df8aceec696c8b9c20c264edb979dfbdd27bd9512fc9794176299746e8d5
font_02_sfnt_off00009b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B28 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000a9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9B4 18524 bytes
SHA-256: 9c72abd8977421c50785b44719a9a0d208cbbe36d089006de9c81bf453dbcd54

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