Malicious PDF — malware analysis report

Static analysis result for SHA-256 c11ff3f1646f8b0b…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 14:30:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e0de4f3b438afda1de5539206b60eaf5 SHA-1: 9a49fb95dd424f5069b14aa1c8cd308e249b4065 SHA-256: c11ff3f1646f8b0b2d82eea579850b4e3f231dd165fa344d31e3395f6b41a982
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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-get-free-spins-on-coin-master-2021-game-hack PDF link annotation
    • http://posterprintshop.nl/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://posterprintshop.nl/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://posterprintshop.nl/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://posterprintshop.nl/images/roblox-free-robux-no-verification_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_off0000486f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x486F 24772 bytes
SHA-256: 387ef68377bc4af3e19a41ac68e2e6787c770a32c9223f0421ca4a01c1e29007
font_01_sfnt_off00008157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8157 18452 bytes
SHA-256: 240b90d3225a309efd4f22f05c72cc9c47fc9cdac152c3e16e2e4001354cf22f

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