Malicious PDF — malware analysis report

Static analysis result for SHA-256 7382a26795b3eae0…

MALICIOUS

PDF

49.9 KB Created: 2021-06-04 02:38:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8c6275f66c8e4d6aab18acce1880ef1f SHA-1: 70a15a786c4aff11d6578f4453d1545b87004c58 SHA-256: 7382a26795b3eae0d8232dc819b51ce846c8f26231df314c1339d9ea1152f38e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'free generator' or 'game hack' lure, directing users to a suspicious domain. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9751

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/479516143/free-minecraft-java-edition-game-hack PDF link annotation
    • http://perpusfkip.upstegal.ac.id/repository/robux-website_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/game-cards-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000054de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54DE 24324 bytes
SHA-256: ae21c56e41bad53ceebc31d4d433f577843bd85ebe93e5c49e09a616de79091c
font_01_sfnt_off00008c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C32 3020 bytes
SHA-256: eedce20c19bed174ebe453a0c0095ca54ef1c0cf763914f699a20348cea05fc2
font_02_sfnt_off00009686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9686 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off0000a097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA097 18164 bytes
SHA-256: c8dc3c0ccaec2cbfabf4f7c22776233ed86b35e7dce69fc624c99833f95d0764

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