Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f8fa870ab3e4c3…

MALICIOUS

PDF

44.8 KB Created: 2021-06-09 09:08:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6f7d4bf40e9a215f9ebf9958dc98f826 SHA-1: 93dd5248c79731d304481b7e86b1e5fc78263b2d SHA-256: d0f8fa870ab3e4c3fda9f12601995630284b8057c5f8f4872061fe72df833118
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and cheats to entice users to click on embedded links. The primary link redirects to a suspicious URL, and numerous other PDF files are hosted on a related domain, suggesting a campaign distributing malicious documents. No scripts were extracted, but the PDF structure and embedded URLs indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/cheats-on-skyscraper-tyocoon-2-in-roblox-game-hack PDF link annotation
    • http://foo.com.tw/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-someone-on-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/pokemon-go-free-coins-hack_GM1094591345.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005158.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5158 24868 bytes
SHA-256: 723bfc642f3091e46965a8866b3dd8bef269197671c1ca4c896a7b4ee86be593
font_01_sfnt_off00008a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A93 18932 bytes
SHA-256: 5d1e6fdf3272224a389adee46cae74113af6d8feb1438982dc56e8eabcdff6c9

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