Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a933c49498bafee…

MALICIOUS

PDF

42.7 KB Created: 2021-06-03 06:56:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f39377f2d91e5792a4324e5d9120a85c SHA-1: a6ed9881ee435a397e2aecee21e6704f2e0d46ae SHA-256: 8a933c49498bafee626469fc5932d5c0f37bc39141eff235f655da0a772bc0f7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free spins, directing users to a suspicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/free-spins-coin-master-hack-2021-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-uc-ucuz_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-spins-on-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_off00004c23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C23 24304 bytes
SHA-256: 99fc9d4807e4570d70235f71805538ac2e5eb0d72cb0a47a7bcf615b053588f5
font_01_sfnt_off0000838b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838B 18456 bytes
SHA-256: 8f74d6ddd2abce9f563610cbfcc253ce51c057807514da134dc64dcb58b7111e

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