Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b048a105f481cb7…

MALICIOUS

PDF

38.1 KB Created: 2021-07-06 08:34:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bd1f503b8f3317cc7de5d50c6b9cf588 SHA-1: 117e3faef7019e5e818e7d88d93a500adbf69f8c SHA-256: 6b048a105f481cb72cf95787cfd2e296ab30e208cd3cd68ed7c748bc40cc3b31
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 0.9985

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/431946152/rbxoffers-com-free-robux-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-guava-juice_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-script-pack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/farming-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/well-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-join-someones-game-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-be-a-vip-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/install-roblox-free-latest-version_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-game-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-pf-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/make-robux_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D17 22896 bytes
SHA-256: f5a4e2aae764560324c0cb40357a6e9b93d56d05a786dfbeda419dd6d144cf1b
font_01_sfnt_off00007074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7074 18976 bytes
SHA-256: a0223b82be68661a8b22d1b4f0340e8af90fd6b3faac36c3bfc3d0e3dd614ada

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