Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe38c412cf6467ad…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 09:29:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b28c24686cc58a2467677fa45b42dc77 SHA-1: b1940ae66ab951e6381825d319cb3bc7797d2299 SHA-256: fe38c412cf6467ad4db1af13545428497ac772b595b90a17366411d6af536450
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and references to game hacks and free in-game currency, such as 'Ninja Legend Hack Roblox'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates these links likely redirect to malicious sites. The ML classifier also flagged the PDF as malicious with high confidence. The document's content and embedded URLs suggest a social engineering tactic to trick users into downloading potentially harmful files or visiting phishing pages.

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/ninja-legend-hack-roblox-game-hack PDF link annotation
    • http://bepquannhu.vn/upload/editor/files/free-robux-games-no-scam_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/roblox-hack-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/roblox-how-to-look-like-a-ghost-for-free_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/youtube-roblox-free-cops_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/how-to-cheat-on-risky-strats-roblox_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/tiktok-views-free_GM835599320.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/roblox-free-jeff-the-killer-cape_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/pastebin-how-to-get-free-robux_GM431946152.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
font_00_sfnt_off00002e81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E81 22780 bytes
SHA-256: 15a7343555fd9e1a7ef251bb4f8a56239776c3c17a9c42ffeb257f16815533ff
font_01_sfnt_off00006181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6181 19136 bytes
SHA-256: a7d4ec40c92d6d04c0e693caab1cd1e9c9e0940c69e1730585a5a66f3d483e8d

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