Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c766ced9075196…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 08:31:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cd36befdcbb872b02cdcfa233583cf37 SHA-1: 208225c7c0cdf4b37363512b9d16628338a59c48 SHA-256: 84c766ced907519643835bc310a24eb3f569a1bd89ba6db64a4ca6b4380f4a09
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/835599320/free-tiktok-accounts-and-passwords-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/beta-this-obby-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/slx-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/2021-hacks-for-da-hood-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/lab-experiment-cheat-easy-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-speed-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-toys-code-free-dog_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-roblox-clothes-and-hair-not-model_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/fly-hack-in-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-grab-knife-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pastebin-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cyberchase-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-link-spin_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_off00003405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3405 22600 bytes
SHA-256: 15136394d0f2f9732bd9eb40c8a6f1e7e5a33981e300b48611d97694bdf90abf
font_01_sfnt_off00006686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6686 18604 bytes
SHA-256: 0574235514a227558616d3b645e07a1bc7755eae176f5c06de45640ab277ee39

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