Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bee8ec99a007dad…

MALICIOUS

PDF

33.1 KB Created: 2021-07-01 06:58:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 611df2191b9859141a1c71fdb00eb962 SHA-1: 41fdcb7ea8f2a5a9a5817ad6eaee51e7e822701f SHA-256: 5bee8ec99a007dadcdd57b30eedaa56adbe9fff089945381a64bb29c547b1149
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The document body and embedded URLs strongly suggest a lure for users interested in game exploits, likely leading to further malware downloads or phishing. No scripts were extracted, but the presence of numerous malicious redirector links indicates a high likelihood of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-speed-hack-2021-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-ipad-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-de-robux-funcionando-2021-100-para-aser-bromas_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-gamemappses-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/earn-free-robux-rbxblaster_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/t-shirt-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-hats-exploit_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/v3rmillion-roblox-account-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/pokemon-go-free-gyarados_GM1094591345.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-roblox-in-three-simple-steps_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hacks-2021-epicmini-games_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/taste3-com-roblox-online-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/clicksfly-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-pet-snacks-coin-master_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_off00002a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6C 22000 bytes
SHA-256: aea3a9fbfcbd8c8efb5c9a5f414a4b41584360e9092d44cbf556eb036f356f35
font_01_sfnt_off00005b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B37 19408 bytes
SHA-256: 17db5e3ec11d567fc32e32a9e3d6e67ea852bcd21f056c9db836491538c4b658

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