Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6f82108d50e28d…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 20:43:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c326fdcf24cc67a2ee5610bdebac26ac SHA-1: fe65415beaa7eaeeebe175c57180b89cb9bfd883 SHA-256: db6f82108d50e28dfcbdc2bbf4540341491e2e74d36f61bae8e381bece101a31
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free generator / game hack" which redirects to the URL https://netcdn.online/app/406889139/official-coin-master-free-spins-game-hack. This URL is likely part of a phishing or scam campaign designed to trick users into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interest in game-related cheats to deliver a payload or redirect to a malicious service.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/406889139/official-coin-master-free-spins-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-coin-link-for-coin-master_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
stream_004_off00005560.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5560 26344 bytes
SHA-256: 840445c8674ffdd0a2533c31f39c7e1bee3944db265fafb0218e3953bfa7a3df
font_01_sfnt_off0000904a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904A 17960 bytes
SHA-256: 566edd865edd8744df8e39a8001e850e6dcbcdadb3e6ad7cdaa37e096c94fcb6

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