Malicious PDF — malware analysis report

Static analysis result for SHA-256 31964bf57243286b…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 20:11:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 62f0643d099596651eb6ee6315503748 SHA-1: 927cfc882efd683491b760728771eaa92e3b9dd0 SHA-256: 31964bf57243286b6a30bcdb39286fc8c490e3bd266b0f40dfd4212a6e2b4eab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to external websites that promise game hacks and free in-game currency, such as Robux and PUBG UC. The primary link, http://netcdn.tw/app/431946152/robux-apk-game-hack, is flagged as a game hack redirector. This indicates a social engineering attempt to trick users into visiting malicious sites or downloading untrusted applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/robux-apk-game-hack PDF link annotation
    • http://projectunionstreet.com/library/repository/pubg-uc-india-price_GM1330123889.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-lua-executor-free_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-gift-card-gewnorater-for-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/pubg-uc-app-download_GM1330123889.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-ezpoints-gg_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/pokemon-go-free-play_GM1094591345.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/food-empire-roblox-hack_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-cheat-codes-for-money-on-jail-tycoon_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-roblox-adopt-me-accounts_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_off00003243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3243 21544 bytes
SHA-256: 8112826b1e7644a52b1028c76a6511f532becc24018e5be9a7a2148a337f3703
font_01_sfnt_off0000619f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619F 18896 bytes
SHA-256: d6fe5a9ee6cd38a3f7fd000d6a8081505603ed5c53f6d64f924d6cd3550e503f

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