Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb5740180eeb0188…

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 15:55:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 407f3bbb8a0be567f3606ca196b59e96 SHA-1: a0495246a31d203a262041ccedf1d6c685089254 SHA-256: fb5740180eeb018863b723d99dcc669f89844c3ca7dfdd0ae7a6686f6d2c61d1
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/those-of-us-who-remain-cheats-roblox-game-hack PDF link annotation
    • http://perpustakaan.ipts.ac.id/repository/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-hack-teleport-a-player-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/pubg-uc-xtrcom_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-hacks-flame_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-free-xbox-packages_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/robux-app_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_off00002d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0F 22116 bytes
SHA-256: 3be49a4615b50b894cde2aad642490a88a3d1fc51f11e2dcd376000de594b19c
font_01_sfnt_off00005dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFE 19336 bytes
SHA-256: 41554b608b743ddc231a517dca2ba7fc86bed229c27e235bcac0716a3b6e39ff

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