Malicious PDF — malware analysis report

Static analysis result for SHA-256 17173b9c49fbd1c7…

MALICIOUS

PDF

34.4 KB Created: 2021-07-07 18:10:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7b6dae50487b1a50f547cbc877507452 SHA-1: ba2e236de5b8a5a2412da0782ac990ea1ad87d97 SHA-256: 17173b9c49fbd1c7fdf52d35e747e48fb37924f4072918e133b02bbdb1fb729a
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.tw/app/479516143/minecraft-diamond-finder-hack-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-robux-infinitos_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-do-you-hack-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-prison-life-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-3d-modeling-software-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/dragon-ball-z-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/draw-free-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-robux-hack-free-robux-generator-uirbx-club_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-redeem-code-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cheat-teleportation-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-spin-free_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
font_00_sfnt_off000030e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E9 22384 bytes
SHA-256: d1da0e4c1914aaf6a445d85340838d36331899ecd5ea19e0f241a57bf8aae353
font_01_sfnt_off00006258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6258 18768 bytes
SHA-256: 1598c3682c859f253aba253f2e5c14b5c25da3ef850df7010b86b0bb11aa0ad8

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