Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e36154f7c0b9b1…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 12:13:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 67d7f13cef20e53087ef43b430c54027 SHA-1: 669b6eabeffe88fca5fc6a33386a4e2335c73eb3 SHA-256: d2e36154f7c0b9b172367e04172d447a2cc30f1f83b877a144a025d95ebb7aaf
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses a seed-phrase/secret-recovery lure. 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 0.9796

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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 https://netcdn.online/app/406889139/coin-master-hack-unlimited-spins-and-coins-cheats-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/easy-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51F4 24864 bytes
SHA-256: e03e584af55d7df4d53e4bd304fe39437a36b494f5e07f6e3f2ad62871df8c65
font_01_sfnt_off00008ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE1 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off00009768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9768 18752 bytes
SHA-256: a5aec5b248ebf18d124a3553706da1b452fa76c75010bd29e6f2a67b685d44b8

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