Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f7621dfaa2bab4a…

MALICIOUS

PDF

41.4 KB Created: 2021-05-13 20:42:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 70168b1d3d5972238d015f5c26630e83 SHA-1: 9165a24bfc11e377a93e694ef3e8e063343b6504 SHA-256: 8f7621dfaa2bab4aa435f190c1ee14a571478acd15617cde84906e106ba2b770
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/coin-master-hack-pro-gamers-com-game-hack PDF link annotation
    • https://learnwmf.org/image/data/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-hack-m-coins-mcpe-master_GM406889139.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_off0000486c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x486C 24268 bytes
SHA-256: e122ce2a3820934f15460059c249733b635e4b6dd73280289f34c4443b6ec67e
font_01_sfnt_off00007fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCC 18132 bytes
SHA-256: 7c3ba000fcc9e82367a9cf09e7428e48624a936725f215f3086fe1b405a0b7f2

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