Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5fdb14188ed06e…

MALICIOUS

PDF

34.9 KB Created: 2021-07-08 01:21:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0d896d1f97495fcd247fe47ea89e50fc SHA-1: c81f1994d71636f762d7148889806ba8486947f3 SHA-256: 3d5fdb14188ed06e0d49f1071f47c26b3938b48e69338c3fb6926880339eb87f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and currency, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the embedded URLs suggest a phishing or scam attempt. Although no scripts were extracted, the document's structure and content point towards a social engineering attack designed to redirect users to potentially harmful sites.

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/431946152/how-do-you-get-roebucks-game-hack PDF link annotation
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-get-free-robux-ulimtamate-gamer_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/draw-free-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-hack-levels-in-roblox-project-pokemon_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/i-want-to-hack-roblox-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-give-items-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/free-robux-just-by-watching-videos_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-make-free-robux-in-roblox-2021-no-fake_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-to-get-hacked-client-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/pokemon-go-free-602_GM1094591345.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/rb-robux-unlimited-hack_GM431946152.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://www.clinicalsim.com/uploaded_files/userfiles/files/coin-master-hack-version-download-2021_GM406889139.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_off00002ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFE 22852 bytes
SHA-256: ea7a8bdabbf2f09aaae65e27ca106b03bd977d842f64354bad8020784400add9
font_01_sfnt_off00006300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6300 19108 bytes
SHA-256: 02bde1de084bede144a80d21b4e43381bf426796d7fd3e877b5226ac1a18dd07

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