Malicious PDF — malware analysis report

Static analysis result for SHA-256 01394fbc420d1efa…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 13:31:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b4964a1eca694dbaa83ea40320381864 SHA-1: 81dea567236882e3a6c134bcedeaf5e74217a293 SHA-256: 01394fbc420d1efa26337193313f7d36a60cfbe2c8d39f7fa51aca6b386115c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains multiple links to redirectors and potentially malicious sites, masquerading as game hacks and cheats. The ML classifier and specific heuristics strongly indicate malicious intent, likely to lead the user to download further malware or engage in phishing. No scripts were extracted, but the embedded URLs and document structure suggest a lure for initial access, potentially leading to client execution via exploitation.

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.tw/app/406889139/spin-free-coin-master-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-robux-free-no-subscribe_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/cheat-codes-for-roblox-mad-paint-ball_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/real-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-sword-fighting-tournament-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-explorer-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-codes-get-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-dr-benx-hacken_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-javascript-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-100-working-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/best-roblox-hack-executer-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-robux-hack-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-sites_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-with-chrome-extensions_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-boombox-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-your-self-getting-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/install-hacked-roblox_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_off00003750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3750 22448 bytes
SHA-256: 9ed9058c39d9684ba46e3bac82715067c5be28b07d41d2e5d9f680e657daeb14
font_01_sfnt_off00006917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6917 18176 bytes
SHA-256: 8b68a35672d5b21ea29aeea640c198d2f03cb2d1fa451451c8ac02328cee2fb7

Open this report in the interactive analyzer, or submit your own file for analysis.