Malicious PDF — malware analysis report

Static analysis result for SHA-256 32eb7f00a5381613…

MALICIOUS

PDF

34.0 KB Created: 2021-06-26 21:26:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f47f2659191b82bd5dae611e546e892e SHA-1: 55a306a6cae6511ea96798ef26be490dc4c871a3 SHA-256: 32eb7f00a53816130f73ce9f6f88ee8a7a01e3df6fcef115b9f36bec3d50badb
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 0.9980

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 http://netcdn.co/app/431946152/roblox-free-online-unblocked-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/shirt-roblox-template-free-shipping_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/krnl-download_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/dev-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/best-hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-advertisement_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-free-neck-accessories_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-steal-a-roblox-account-with-hacks_GM431946152.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_002_off00002ccd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CCD 22740 bytes
SHA-256: 83a8e08d01e8319c0736cbe8c5d405ccb5166c7d286e688b475416738f7f8041
font_01_sfnt_off00005f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F82 19112 bytes
SHA-256: ee2415481b3413ff364266ba338b7a8f8bc826f89345c265306727bb045795ef

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