Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6fed9365eb6677e…

MALICIOUS

PDF

44.5 KB Created: 2021-06-07 10:32:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6858d3537f9bf9c2f019098b3541efb2 SHA-1: 22dd332ca57b5860705f2a01011961883d56d51a SHA-256: b6fed9365eb6677e02043bbaf0a5644a45db3544d7162aecd007e8e47ec08870
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 0.9865

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.tw/app/431946152/free-exploits-roblox-2021-october-for-saber-simulator-game-hack PDF link annotation
    • http://unsere-beagles.de/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://unsere-beagles.de/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://unsere-beagles.de/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://unsere-beagles.de/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://unsere-beagles.de/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://unsere-beagles.de/images/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://unsere-beagles.de/images/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://unsere-beagles.de/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://unsere-beagles.de/images/how-to-get-more-robux-for-free_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
font_00_sfnt_off00004f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F54 24828 bytes
SHA-256: 484fbb884585b8e7708ff12f802caac2e81f5d4fa575286a0c60d17f5159e906
font_01_sfnt_off000087d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D4 19380 bytes
SHA-256: 364ff8dabaecabb44a86bdfd47ad27d62824274e91322cf392f9875068f08d12

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