Malicious PDF — malware analysis report

Static analysis result for SHA-256 339aa3d2edb385a2…

MALICIOUS

PDF

52.9 KB Created: 2021-06-09 09:27:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e6f0e16c17d67815f5d0e4c9ef101009 SHA-1: cc8c52bce7ad9d6906d60ed0358a1b7f9c121744 SHA-256: 339aa3d2edb385a2a030a1f2731e1786b6307585f06cf6ca47b6413d3eada5c5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary focus on a URL associated with 'game hacks' and 'free generators'. This suggests a social engineering tactic to lure users into clicking potentially malicious content. The ML classifier also flagged this PDF as malicious, increasing confidence in its harmful intent. No scripts were extracted, but the presence of embedded URLs and the lure indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9614

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 https://netcdn.tw/app/431946152/hacking-system-o-n-roblox-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-fre-codes_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/nograv-on-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-whatsapp-tik-tok-status-download_GM835599320.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-adidas-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-youtube-tiktok_GM835599320.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC4 28368 bytes
SHA-256: 2422b37ee02e4ba9b85af21ac048cb170f24decc2734534f88e3df4acf7e54bf
font_01_sfnt_off00008efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFB 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off0000a9e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9E8 19132 bytes
SHA-256: acaa76aba86d0d0f82f51ad4112ed76d874fb4839b7c0707a7f5651f9c4f2c42

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