Malicious PDF — malware analysis report

Static analysis result for SHA-256 1584554113e11cbc…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 16:11:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 48f36b7f90c52ab697634ccd4d50f348 SHA-1: a55d63e86ec6b27a8b9aca7c208e2e6dc4f730fa SHA-256: 1584554113e11cbce1b522384d1a00806784113cad3c665540445c8847c17477
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/479516143/minecraft-toys-for-free-game-hack PDF link annotation
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-roblox-accounts-answerscom_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-use-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/can-you-get-alone-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/redeem-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/hack-roblox-prison-life-v2-02_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/nuevo-hack-generador-de-robux-de-roblox-by-pignoise_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-in-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-how-to-get-free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/dominus-hat-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-adopt-me-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-roblox-reedem-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/games-that-give-you-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/ash-greninja-free-shopping-in-roblox-on-robloxshopping_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_off0000322e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322E 22572 bytes
SHA-256: 055510ae1f2418a93b4deb16026eb25cea06354cc1e684b5f601c0211c5cd6a9
font_01_sfnt_off000063d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D3 18180 bytes
SHA-256: f81bb2f2fd86575a0e0f0902236f9c8512641ba003de241774aa63060d9f6659