Malicious PDF — malware analysis report

Static analysis result for SHA-256 3488830ae108a35b…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 11:50:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b0e3005d65154ae34b1b2b971da1a3aa SHA-1: 07dae29c5f68fe6bb9e64cf9995cd8660a0eecdc SHA-256: 3488830ae108a35b6e6ede06a33207327dadab0eae81ff236bedb1c33dbcd951
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.tw/app/406889139/free-spin-link-in-coin-master-game-hack PDF link annotation
    • http://sarny-rada.org/ckfinder/userfiles/files/robux-pin-codes-free_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/free-roblox-boombox-script_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/how-to-hack-any-roblox-game-2021_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/how-to-sell-a-free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/roblox-speed-hack-2021-october_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/hacker-jacket-shirt-roblox-j_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/the-conquerors-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/hacking-roblox-with-code_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/damian-hacker-life-roblox_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/hack-pour-roblox-apocalipse-rising_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://sarny-rada.org/ckfinder/userfiles/files/tps-new-tools-free-roblox_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_off00002ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA5 22432 bytes
SHA-256: d80eb4a7f22dff12f8b7f771ae5d11ed22f0c3984eff0b540a1ab8a9ebc819a5
font_01_sfnt_off000060d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D6 18344 bytes
SHA-256: d3e962bcabbb5ef935488ecc7aa9e5e3fb65918ede879eb88a760949ba3de850

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