Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64f877344eed47e…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 14:16:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3e06be53f1a1cd83947b833e8349e1be SHA-1: 898b049109802ab4f3984a2ed23e6be999e216f1 SHA-256: f64f877344eed47e89a7c857663ddd4721fcb5fb74567a2a5d02aa09949776d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free currency, directing users to a known malicious redirector. The embedded URL http://netcdn.co/app/431946152/roblox-black-wings-free-game-hack is associated with malicious redirector infrastructure. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially harmful 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/roblox-black-wings-free-game-hack In PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-get-a-free-hat-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/buying-rich-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/roblox-source_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/robux_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_off00002f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F08 22624 bytes
SHA-256: fde43f8ba95279b68b00638890079bd6aa44f09de38047c1707bf86d63814f0b
font_01_sfnt_off00006181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6181 19136 bytes
SHA-256: d4768f49bfaf67797548931edb4926b85ba3b0c27529fcb3a4627623f382920e