Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fba0271d39ef4c2…

MALICIOUS

PDF

34.7 KB Created: 2021-06-18 07:43:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 475a26aefc8f03e180b1b51aa75794c2 SHA-1: 205556b6d435f16105f6ee5508f782c7737b1d9d SHA-256: 8fba0271d39ef4c2bdda9808dc79293af76e3bcd1d1ad57fde6dba3dac88c6ad
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/how-to-hack-in-roblox-roubux-game-hack PDF link annotation
    • http://stiepariperpus.web.id/sarjana/repository/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-jojo-project-cheat_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-patched-hacks_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/roblox-gang_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/info-roblox-com-robux_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_off00002f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1C 22840 bytes
SHA-256: 6d5a96c2fba25ce2b088ed98db21ad7304e12dd2214378f976cbdfc5d8183771
font_01_sfnt_off0000629a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629A 18960 bytes
SHA-256: b9ff30f37488320ebcb0cba0369ac3b926d437c7b643811155ec4ca87b040449

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