Malicious PDF — malware analysis report

Static analysis result for SHA-256 1961881ba405050c…

MALICIOUS

PDF

32.0 KB Created: 2021-06-25 22:45:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 72094fbeddc391ce9b732910de36a8a9 SHA-1: 00aa493f352af2722e77089602afc3069e0e9cd8 SHA-256: 1961881ba405050c82aaed1414d7de2460433c16d9b942eb41d3dd616353037f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/resource-ml-free-robux-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-games-with-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-cheat-script-auto-farm-super-power-training-simulator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-hack-cars_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-2-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/cheat-engine-cheat-tables-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A18 21316 bytes
SHA-256: f58a9ddea0ccde9f9059f037d0e5bf5bd87f377198af9d7c6269bea3c7c8a183
font_01_sfnt_off0000589b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589B 18988 bytes
SHA-256: cf85e203352a7650e7d23e5a096dd398c5dfe305f88c9674ad3fbabc207d9903

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