Malicious PDF — malware analysis report

Static analysis result for SHA-256 93eddd459b8fb1ea…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 16:24:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9488d2f4aac44360a8eed91b80ac0d5b SHA-1: 117bd4d7b5cc06651a0820df0a05de636a8deef3 SHA-256: 93eddd459b8fb1ea344c4868d8060eaa83588b61ba61d893aec0594f4a44bc03
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.tw/app/479516143/minecraft-free-play-no-download-game-hack PDF link annotation
    • http://achauco.vn/public/upload/files/free-robux-no-survey-or-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/roblox-da-hood-hack_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/how-to-get-free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/robux-cheaten_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/roblox-hack-2021-admin-commands_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/roblox-account-stealer-hack_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/free-roblox-video-games_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/roblox-free-without-installing_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/free-roblox-dress-up_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/free-camera-plugin-roblox_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://achauco.vn/public/upload/files/how-to-get-minecraft-pe-for-free_GM479516143.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_off00002efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFB 21908 bytes
SHA-256: 916de1b52ab1a94acc4afcd78b59f07fc7098866d484b0ffaa5970d9e6f6ebea
font_01_sfnt_off00005f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E 18912 bytes
SHA-256: 41a5609cb18ac90b1eab2a0592e2c4e81c85eced3afbdcfc55e2077aaaa40b1e

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