Malicious PDF — malware analysis report

Static analysis result for SHA-256 11b1d321c256538d…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 07:29:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cdc6c9afccf8576165ea92b33c139754 SHA-1: 8c14646f4e7c94925c278358eafa44c9283a9653 SHA-256: 11b1d321c256538dc0ffe4e45197961644f92da847241f5afbf4bfc6a8c1024b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free in-game currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs indicates a likely attempt to redirect users to a malicious site or download a secondary payload. No scripts were extracted from this sample.

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/free-roblox-clothes-codes-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/how-to-hack-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-mania-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-id-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/rom-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-windows_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/change-clothes-by-id-roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-2021-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/rise-of-nations-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/do-you-get-banned-for-hacking-in-vip-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-not-fake_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_off00002d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D93 21264 bytes
SHA-256: 224b1ebc4418218d3ed56506fa392e432d2b21b756dda1ad839efca941ace901
font_01_sfnt_off00005bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF9 19092 bytes
SHA-256: 3005e414e00fe64fff59ab78dd3a11fd0d5202ba38aea3823b7fd42245227942

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