Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f1c9d4c024e4de…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 10:37:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7f160edcd0bdedc3dd3dc40aeffa47d5 SHA-1: 62380e86657d592b3ed14f2a0fef25244d98a669 SHA-256: 09f1c9d4c024e4deb3099d0e5785f0a648ef7e5eb65a424059c1e4cf00aa187c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, masquerading as a 'free generator / game hack'. The document body, though heavily obfuscated, contains references to game-related terms and URLs, reinforcing the lure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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/479516143/simplysarc-game-hack In PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-bandit-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/pokemon-go-free-kr-hack_GM1094591345.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/kristjonz-15k-robux-reward-hack-tutorial_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/cache-http-thebuxiancom-howtogetfreerobuxonroblox_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/how-to-find-hacker-matrix-egg-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/rbxfree-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/hack-roblox-admin-dl_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-hack-pc-free_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_off000032eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EB 22788 bytes
SHA-256: fc4f97bd84e0694a59de7e6f9e48ce868b44e3255a67b48bab9c5d564e70bdcf
font_01_sfnt_off0000656f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656F 18440 bytes
SHA-256: 7c23f3e3d318805df684302eb3460a013bc43601185b4b54a2bf1903bd620144

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