Malicious PDF — malware analysis report

Static analysis result for SHA-256 058ee9511bef78e6…

MALICIOUS

PDF

45.4 KB Created: 2021-06-08 18:16:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9b1c8b2cd54bb8a0bde942ba99eae64d SHA-1: f677c69182682549f32f7bbecf5e900281211df4 SHA-256: 058ee9511bef78e63d0e64c77ea07b1b197d044ed860fbabd28b6ed6513a5afe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that promote game hacks, suggesting a lure for users to download potentially malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a suspicious nature. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/roblox-project-jojo-stand-hack-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-booga-booga-mojo-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cool-free-minecraft-skins_GM479516143.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
stream_004_off00004fbb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBB 26396 bytes
SHA-256: b631a4ffb938276b309fe4e4342959e1a25fa7196f25d5e9a877cac7f77503c9
font_01_sfnt_off00008cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDD 18968 bytes
SHA-256: 64c52299e83b5c5598a615d9e6fa00a2db2ba01d61e4c3739ea2a8194a3fdf54

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