Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f35ec285f50cf8…

MALICIOUS

PDF

48.8 KB Created: 2021-06-03 10:21:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7f320c812ce5f5fab1c6b092f8563461 SHA-1: 2dce5c04e2e57b84f3a8da610d3c10f4eb8632f8 SHA-256: e6f35ec285f50cf81a3d8288ea1afc399293bb98844604ad40025342086a19dc
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 0.9796

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-links-for-coin-master-2021-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-blogspot_GM406889139.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_off000051ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BA 25060 bytes
SHA-256: 1a09eda54f4189d0758c00012c477a355c5dc306d4e56386e3856756ba5f30f9
font_01_sfnt_off000089be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BE 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off00009bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD6 18284 bytes
SHA-256: a2acd8bf1a51d4e254a7633d59ee55714bf8557f87202f8b12d552e9cd1876aa

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