Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93a19dc1d877372…

MALICIOUS

PDF

45.2 KB Created: 2021-05-17 16:33:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e4caeee89822518f4ebe1706d113a728 SHA-1: a30666f00fcde7cd765c250b0c7925098851b971 SHA-256: c93a19dc1d877372bd21ad18c4c03c0d646789cf458b5d90fd7bdb5c41ea01ff
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to a 'game hack' website, indicating a social engineering lure to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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-without-verification-game-hack PDF link annotation
    • http://tasleemdubai.com/userfiles/files/free-robux-net_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.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_off00004a41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A41 24168 bytes
SHA-256: d466d2cb6512939b6ea23849c399dfc325fe6101dd7f8eb0300b6e43f35f9b91
font_01_sfnt_off00008176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8176 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFC 18356 bytes
SHA-256: dc73d1475286564dbbcfd7fe1f785306788ee44bec01666c46f1ad38f7aa2791

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