Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ea871d2715c54a…

MALICIOUS

PDF

32.8 KB Created: 2021-07-02 00:03:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9866bab590011d4d1b5e76918ae6c207 SHA-1: 3e296f133308dcbd0df8cdc8a0cb6ac5bb2d5f13 SHA-256: 54ea871d2715c54a1dbc140227a3ed05e3e1f9408fd11d413b238a434a96f9ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a generator for game currency or items. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, likely leading to further malicious content or malware. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/free-abandoned-roblox-accounts-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/free-ron-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-roblox-robux-no-download_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-follow-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-cheat-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robloxgamer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/aimbot-roblox-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-wins-in-anarchy-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/game-freak-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-free-items-script_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/i-want-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_off00002d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2E 21092 bytes
SHA-256: c0d23619015c60ecd3f29f1b432e8011142cff99bcfa8f97f002b1b491423745
font_01_sfnt_off00005afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFB 19068 bytes
SHA-256: c772d340dd62f383e913e8613718b048404da70b4ab638279b05e3c26422330f

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