Malicious PDF — malware analysis report

Static analysis result for SHA-256 b407d2d578bb8c0d…

MALICIOUS

PDF

34.1 KB Created: 2021-06-17 16:48:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: beb4de04cc3ff69189fe4f95c02d1a92 SHA-1: 89a3e8d92f37c28f86c5ad39f4b571d003ca2818 SHA-256: b407d2d578bb8c0d056bcb04c16655b049f6bd5f4bd36c3e764f0aed2d074947
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and document body text that explicitly promote 'free hacks' and 'generators' for popular games, directing users to a known malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the document's structure and content strongly suggest a phishing or scam lure designed to redirect users to potentially malicious sites.

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.co/app/431946152/free-robux-hack-generator-without-human-verification-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/i-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/tiktok-free-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-hacks-on-midieval-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hack-download-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/game-hunters-coin-master-free-spins_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_off00002f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3E 21532 bytes
SHA-256: 0bf25c68dd836720f557013df688f215e97494a1447fae3cca47c8bcbf593a37
font_01_sfnt_off00005dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCE 19868 bytes
SHA-256: fbf54cbf929a90e494782c9070dccce514a830302e99547bcd972ba246363ea0

Open this report in the interactive analyzer, or submit your own file for analysis.