PDF static analysis report

Static analysis result for SHA-256 39b0aa2e267c3d20…

SUSPICIOUS

PDF

35.0 KB Created: 2021-06-23 06:52:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 45639129ef0e2124b5dc58321cb26a93 SHA-1: 70db213132208f0e95e305444abc05ba453ac43c SHA-256: 39b0aa2e267c3d20802d4a141fd0773d850574684b2a77f9ac398bd882bb32a7
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that promote a lure for free in-game currency, specifically mentioning 'Robux' and 'Minecraft'. The ML classifier strongly flagged this PDF as malicious, and an external URI was identified pointing to a download link. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the content suggest a phishing or social engineering attack aimed at tricking users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/addrbx-earn-free-robux-by-doing-tasks-game-hack PDF link annotation
    • https://fib.ub.ac.id/sac/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-generator-2021-roblox-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-100-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/village-coin_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/como-hacer-un-hack-en-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-can-you-get-free-spins-on-coin-master_GM406889139.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
stream_002_off00002ea9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EA9 23012 bytes
SHA-256: 12af17b9e5447d7bdbb61f5ca380062069e4f5fb2d46ada6f89bdb38553c8917
font_01_sfnt_off00006243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6243 19528 bytes
SHA-256: 0829bd10ca0583cbe957a083a13813a4478866149fec3971b8f78b9fe90f6f43