Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dc9bcd54d2956e6…

MALICIOUS

PDF

35.1 KB Created: 2021-06-18 04:36:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 81171be9a514452d468997618cca8ca8 SHA-1: 134f9ad809c60b7f74d6f111e80a5bcb2464138b SHA-256: 5dc9bcd54d2956e647522de99231229f66a0f2662e1ec2c6af5ef13920224b6b
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 0.9980

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.co/app/431946152/roblox-martial-arts-bo-hack-game-hack PDF link annotation
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/roblox-work-at-a-pizza-place-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/how-to-look-like-a-pro-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/gametest-roblox-com-free-bc_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-nike-pants-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/robux-hack-real-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/all-hack-week-2021-projects-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-summer-grl-roblox-skins_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-4-mobile-24-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/earn-free-robux-videos_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.antropologi.fisip.unand.ac.id/repository/robux-giver-free-site-robloxcom_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_off000031b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B3 22488 bytes
SHA-256: 1d0eede725f7ff35aee2ca19e32232360344eaf4a574c2c731e240ebb2f63456
font_01_sfnt_off000063e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E5 19076 bytes
SHA-256: e3ba2ec413c403fd84c53248a6788c441f0cf5f0a171a0600d7ea004c9727ed7

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