Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ffb2f5134f755a…

MALICIOUS

PDF

32.4 KB Created: 2021-06-23 17:25:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b9b488cefcd066cde701fb47a2ce2de6 SHA-1: 4609cf1c9a3a836b55ea737da7753692b19a5ba7 SHA-256: b9ffb2f5134f755ac612ab5fb993c1bcd824a6299df2f78949db8fdb3caf086f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary lure appears to be related to Roblox and Coin Master. The presence of embedded URLs and the ML classifier strongly indicate malicious intent, likely to lead users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9683

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-retail-tycoon-cheats-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-on-kindle-fire_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-hack-august-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-robux-3-easy-steps_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/best-roblox-hack-scripts-paste-bin_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-2m_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-mad-city-hack-money_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/fnaf-rolelay-roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-arsenal-hacks-mobile_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-free-clothes-codes_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_off00002abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABB 21432 bytes
SHA-256: ba83788c86b33ffef8236ffd05d29f2cbc2b965b63d731cfb097fc75537a389e
font_01_sfnt_off0000599e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x599E 19056 bytes
SHA-256: 1ee83b487bee4146e21ba3df6348f083042bd359235760bedd1da5b7d0508c44

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