Malicious PDF — malware analysis report

Static analysis result for SHA-256 577bb0e388a00aac…

MALICIOUS

PDF

42.0 KB Created: 2021-05-17 03:54:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f2aca1800258bc20a76dca77bb943b82 SHA-1: 246bd3c3f09bdbe2aa80dfbaf597f932210a5b00 SHA-256: 577bb0e388a00aac1a474746e4ae5c95583c4934f88c82920f7823e71c8ce980
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/free-spins-coin-master-march-2021-game-hack PDF link annotation
    • http://apostolosandreaslemesou.com/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/roblox-gang_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/minecraft-server-hacks_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_off000048d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D5 24676 bytes
SHA-256: 20c74401a34ebe4b58feac4abf59ad70865cbdb94d26d8e21466e7e95e16c942
font_01_sfnt_off00008167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8167 18452 bytes
SHA-256: f9f67c77da0d65153792dedd850da678f3a8682f9327ac55251990d25044da35

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