Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc7fa59ebae35f6…

MALICIOUS

PDF

34.0 KB Created: 2021-06-19 05:33:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b3547236b576fcbb388906216146c055 SHA-1: 96460815fa4ee37201eb98d8e139193f326534d4 SHA-256: 3cc7fa59ebae35f6e1b8782b3e8ae80363a7418b496e101709ebcc77b545bf2a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded links that redirect to sites offering game hacks and currency generators, such as 'http://netcdn.co/app/431946152/download-dimond-roblox-hacks-game-hack'. These links are flagged as malicious redirectors, indicating a high likelihood of malware distribution or phishing. The document body and heuristics confirm the lure is related to game cheats and generators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/download-dimond-roblox-hacks-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/download-cheat-roblox-jailbreak-for-pc_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/we-hack-robux-generator_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-accounts-to-use_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/pubg-600-uc-in-pakistani-rupees_GM1330123889.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/vehicle-simulator-roblox-money-cheat_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_off00002e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3D 21768 bytes
SHA-256: 7fd460f1f2976fdf2d3247bd05da4e46398fca3ffddff1bfc3fa6089bb223808
font_01_sfnt_off00005e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3C 19540 bytes
SHA-256: c76b4234efea465175532a6086c4ba31af5257d14aaf8e0629be80c2570e153d

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