Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7131f47be248ec…

MALICIOUS

PDF

43.1 KB Created: 2021-05-13 09:32:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 520acbbbaefb68dd8af7076917da6942 SHA-1: 88413f3f42669095f25ef7ffdf04edef58ae5d91 SHA-256: 1a7131f47be248ecfa6ad9e5cde5f2d1abdca5b26330a060324b7889aca5aa9f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs point to lures for game hacks and generators, specifically mentioning 'Coin Master'. The primary malicious URL identified is https://netcdn.xyz/app/406889139/get-free-spins-in-coin-master-game-hack, which likely serves as a landing page for malware or further phishing attempts. No scripts were extracted, but the overall pattern suggests a phishing lure designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://vseslav.eu/images/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/roblox-source_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://vseslav.eu/images/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/freerubux_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://vseslav.eu/images/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://vseslav.eu/images/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://vseslav.eu/images/hacks-for-roblox-jailbreak_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_off00004c71.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C71 25756 bytes
SHA-256: 39aeb7b861113c924d1208b9b05f59a51ecbb0163d9e7143f5614f829e2e3d8a
font_01_sfnt_off00008795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8795 17884 bytes
SHA-256: 156f4ef702737132daa243a2c4fee8c0c13bec142009a1eebf0215f7cb8aef95

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