Malicious PDF — malware analysis report

Static analysis result for SHA-256 858d3d9dc0ae4990…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 22:29:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b0437359c8ab6fdb4af0a746f67c86fa SHA-1: cc50f44e818a45af97b42508550b0ebe707708d0 SHA-256: 858d3d9dc0ae499024ce0c98baee66facb1936d4d9ce055b77642756d98e44f2
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/how-to-use-tiktok-for-free-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/script-hack-roblox-phantom-forces-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/reaper-quest-cheats-engine-roblox-super-power-taining-simulator_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-any-roblox-account-with-their-roblosecurity_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-codes-to-get-free-stuff-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-injector-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/easy-robux-hack-on-ipad_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-hacks-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/fight-club-roblox-hacking_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/groups-that-give-free-robux-everyday_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-run-fast-roblox-the-strets-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-studio-free-download_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_off00002e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3B 22800 bytes
SHA-256: 8d70b2bb1f00958a1a149f478fecf33d0f46e097f3ec68a0ed65995c6dd0d24a
font_01_sfnt_off0000613f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613F 18320 bytes
SHA-256: a083d1277b1cec27f457c6ed1f9bf5b02588da7c728fad35c69ddbe5d3733bf3

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