Malicious PDF — malware analysis report

Static analysis result for SHA-256 6732258418ca98ef…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 12:03:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5375b7653dca6564f2d49900f7261a3d SHA-1: b081a92f66ed821cba74eb084d9855336defbc65 SHA-256: 6732258418ca98ef304108ebb272452d295c394c4f8c2413802e5e3dfded68fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, pointing to sites offering game hacks and free currency. The document body and embedded URLs suggest a lure for users interested in obtaining in-game advantages, likely leading to scams or further 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.tw/app/479516143/minecraft-life-hacks-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-wear-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/hack-de-robux-100-real_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-hack-mod-apk-download_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-vtool-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/list-of-roblox-hackers_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-area-14-hacking_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/descarga-de-roblox-hackeado-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-animation-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-rainbow-shaggy-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-polyguns-crate-teleport-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-access-the-float-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/get-roblox-builders-club-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_off00003043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3043 22172 bytes
SHA-256: 913e9c3a6ee8f4eb563f57e573f3681ba3cf70fa9c40e29701c6299eb074ce33
font_01_sfnt_off0000618e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618E 18024 bytes
SHA-256: 3a120d64b896f67b09dec491f1c88395cd1b98a1e2a7d14c7c33e3cd7fd92860

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