Malicious PDF — malware analysis report

Static analysis result for SHA-256 09be08419d2d2ca4…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 11:26:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a882482154b862fae248654802c5690d SHA-1: 30613432876cfe9b369a5d5170181d161897a9c8 SHA-256: 09be08419d2d2ca48b046bcc5fed6e9bafa3b6a68c7b30f0181078c64f97ad0b
160 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a prominent external URI pointing to a download page for game hacks and cheats. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for distributing malware or facilitating scams. The presence of game-related lures suggests a social engineering tactic to trick users into downloading malicious payloads.

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/free-coin-master-spins-links-2021-game-hack In PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/pokemon-go-free-level-40-account_GM1094591345.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/uirbx-club-robux-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-codes-to-type-in-chat_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/best-games-on-roblox-that-are-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-password-hacker-generator_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/cheat-roblox-pc_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hacks-para-roblox-phantom-forces-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/game-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-virus-free-hack-clients_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/pubg-uc-xtrcom_GM1330123889.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/medieval-hood-of-mystery-roblox-free_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_off00002f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F28 22728 bytes
SHA-256: e673085f6bc4a6822158ce53b38f3c3cde36ee4dbe6a16153a13bfbe2855c1ea
font_01_sfnt_off00006219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6219 18748 bytes
SHA-256: 5e5e3d15871b02552e5fad4f875fae1ebedcacb3eb465dcd628b21570bef926e

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