Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7599a208204d610…

MALICIOUS

PDF

32.2 KB Created: 2021-07-06 07:21:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 67f12244935f6e2dd6993d2d2cf8ce71 SHA-1: addcc49a6cbd3a2c2332d03ee8c7a25059da3332 SHA-256: c7599a208204d61068b2d38da5305edc3240033288e79988125a613754d0eb00
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • 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.
  • 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.tw/app/479516143/minecraft-net-free-game-hack PDF link annotation
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/hacking-guide-roblox_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/picture-roblox_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-admin-roblox-hack_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-roblox-gift-card-giveway_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/pastebin-roblox-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/infinte-jump-hack-roblox_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/overblox-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-csgo-skins-roblox-id_GM431946152.pdfIn PDF document text
    • https://quatangphongthuy.vn/upload/UploadFiles/files/free-roblox-account-username-and-password-2021_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
font_00_sfnt_off000032e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E4 22744 bytes
SHA-256: c14a6b5ae016ee456c2b3a785f3980a203ec5df3e9c1d6b02a83dbfe1c966916
font_01_sfnt_off00006561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6561 17856 bytes
SHA-256: 6898a530d076d41ebdbfd9cf57f4f0427e348e488e3bb44a381b543b62f11fc6