Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1de64204154581f…

MALICIOUS

PDF

44.1 KB Created: 2021-05-13 14:31:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e8b54bf9ba24dba6a0dfeb444802fcba SHA-1: 1883723a86a0a55962fd115ed31f1a0167b07676 SHA-256: a1de64204154581f8cce03c375dc0ab06fe9e21664da8bdc283dd7a37f2ebba0
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 0.9975

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.xyz/app/431946152/free-robux-hack-generator-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-a-roblox-account-2021_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
stream_003_off00004b61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B61 26936 bytes
SHA-256: dd5dda95947b1541bf982b0c5f909f911728111feb08c6cf5c5711d08905ee7f
font_01_sfnt_off00008945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8945 18516 bytes
SHA-256: ac45002ee2c78c55a094f6344a5e95abe10f4ed7f4298fc77d5376065a98214b

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