Malicious PDF — malware analysis report

Static analysis result for SHA-256 80071f1afafb47ff…

MALICIOUS

PDF

57.1 KB Created: 2021-05-10 21:02:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6e2f3dfb59cf5f7d912e8bf31754bef8 SHA-1: 359e475e0c41dd99fea759d0037df413e78cbc84 SHA-256: 80071f1afafb47ff7fda0cdbf86e3f800850f0594348df01ed367516e2269a06
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 0.8284

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.xyz/app/406889139/how-many-levels-in-coin-master-game-hack PDF link annotation
    • http://perpus.unpam.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bd4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD4 29480 bytes
SHA-256: 0e399b48f05c67bd38e619aa246984f4c5d400e67e1c9d47af40b2cc7bfb4e2e
font_01_sfnt_off000090b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B0 3124 bytes
SHA-256: ed7bb336d7ef8856c1d3f3e7588020df8a97f1516275a927db66f54f12ba2e00
font_02_sfnt_off00009ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA0 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000aec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEC6 18076 bytes
SHA-256: 99893503d576b54c6a7779c175b2bfa9d44389b8fa70f32573e8e1493170e333
font_04_sfnt_off0000d03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03C 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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