Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d2ebe2edf4e8a8…

MALICIOUS

PDF

47.4 KB Created: 2021-06-03 12:43:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 37eb9317587f3da6b2f7da5d4c61d419 SHA-1: 8c9fba53c20e7a1de91a8f7e890e33bcfdcf9b6c SHA-256: c7d2ebe2edf4e8a8369de153dc603f7d94af08bf2986f8f60a427380cbc3ea89
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 0.9769

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/hack-coin-master-mod-apk-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-texture-packs-for-minecraft-pe_GM479516143.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_off0000510c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x510C 25260 bytes
SHA-256: d6bd4a9d8c8d5e7182614562dbf5a2dbb7bb420288549c318c1b23d10c9a931d
font_01_sfnt_off00008bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC7 3400 bytes
SHA-256: 75c3a8e6f5c68e0746f893c922e57fd7e888a21fb038f9ae3eedb0a197a59e24
font_02_sfnt_off000096eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96EB 18068 bytes
SHA-256: cdfa184cf4df5ccff7f0e1b489f52066f139e51d3d41ad4e2547d55c8bfcf365

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