Malicious PDF — malware analysis report

Static analysis result for SHA-256 d36769ad5ad71f7c…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 23:01:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 24388f78670c731ac334c1ee057d9a0a SHA-1: aa241075718b4e438f4b403e0fed0b753e1fd75d SHA-256: d36769ad5ad71f7ce0e50231adbc7f835356c914cdc81ee08bf2a4fcb08347fd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and embedded URLs reinforce this by referencing game hacks and generators for popular games like Roblox. The primary IOC is the malicious URL used in the lure.

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/como-usar-cheat-engine-no-roblox-2021-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-on-roblox-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-tag-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-use-cheat-engine-with-roblox-games_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-generator-2021-no-scam_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-free-avatar-creator_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/mobi-hack-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-unused-roblox-game-cards_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-snow-shoveling-simulator-free-santa-bag-infinity_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/wwwroblox-freecom_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hacks-for-british-army-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-speed-hack-2021-download_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_off00002f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F44 22368 bytes
SHA-256: f048e24c5d1aa8a4f8868097187ae8f22a4693c546829ab911c7847a1deedf1e
font_01_sfnt_off00006145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6145 19540 bytes
SHA-256: 4dcb07fe272402ccaf87e570204c7e4a5215a8f6f2c26729fdc95f86bbd100c6

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