Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd12ba517e6f9cc…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 08:11:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1342d652a696dada32f65180a60007e1 SHA-1: 1ecc355e8e1bd148d6d5b3b65ad29c473367f7c9 SHA-256: 7cd12ba517e6f9cc0de64cbe51e74cfc6dbdcc7a9b641511d2339f5df36d3681
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 0.9797

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/coin-master-hacks-free-spins-game-hack PDF link annotation
    • http://lib.akper17.ac.id/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/microsoft-free-robux_GM431946152.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_off00004dab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DAB 24880 bytes
SHA-256: 68de2adaed368a0543d332cdfc18895cb635a833446be683181e2995877f8c84
font_01_sfnt_off000086eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EB 2944 bytes
SHA-256: 06c0323016b6b02ad316e898f05517d621c65dc58604f3822104f87707123cfb
font_02_sfnt_off00009116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9116 18056 bytes
SHA-256: 12d79a7ddbb75c7a0854102822057d5441bee2ca4a20c79f8211a3d0b9a1f375

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