Malicious PDF — malware analysis report

Static analysis result for SHA-256 df350794b82c2f2c…

MALICIOUS

PDF

42.3 KB Created: 2021-05-12 14:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 68a2736c3b8c87297f6570ea766271cd SHA-1: 3a6e0f135e613a3c5b11ca1cb1659581dedfb8a7 SHA-256: df350794b82c2f2c069fbaf5bf5c28006fd18baabffc5bb0da50f94c243d6d6e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack lure, specifically mentioning 'how-to-make-my-own-coin-master-cards-hack-game-hack'. The document body, though partially corrupted, also contains this URL and other similar links pointing to game-related cheats and generators. This suggests the primary purpose is to trick users into visiting malicious sites that likely host further malware or phishing content.

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/how-to-make-my-own-coin-master-cards-hack-game-hack PDF link annotation
    • http://ansacare.com/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/rbx-hut_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/mcpe-client_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_off000049ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CA 25676 bytes
SHA-256: f3923b9d410860b11d73cf42daa4d614235affc026d24aa3dcc341128a1df0b5
font_01_sfnt_off000082de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DE 18232 bytes
SHA-256: 5f1949bcf536834432a639d31c768e6b089f6f06eac6180dd684d59a3237e231

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