Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e1149b2cfbc31e…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 22:11:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: adb4468a74e77ed21d02b046118d3d26 SHA-1: deeb0a6825dbb036763f6fddbebbaaa04e1dc007 SHA-256: d6e1149b2cfbc31e2fc67e0f3c466b444de88e7f3bbdcccc214f7123c247596d
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 0.9980

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 http://netcdn.co/app/431946152/robux-free-no-human-verification-or-survey-game-hack PDF link annotation
    • http://library.futureuniversity.com/repository/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-download-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-and-steal-pepoles-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-marshmallows-in-backpacking-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/flip-master-coins-hack_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
font_00_sfnt_off00002f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F65 21836 bytes
SHA-256: 881b37a9c9515481ebf3ea57f56a1d15e4dc2ff840e9e6ca4d91543f8804a5e4
font_01_sfnt_off00005f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6D 19628 bytes
SHA-256: 76eedf92dbef40fd48762258f6a7f139b9bebd09a60a9bb6032700e5ea1b0bdd

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