Malicious PDF — malware analysis report

Static analysis result for SHA-256 2512d5a180d818e3…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 19:02:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 04e8899fe5c880e50dad0270a12694e7 SHA-1: 9c2f237496d99c593674c7ce8b35fe8bf5d16ed8 SHA-256: 2512d5a180d818e3858f309ff88cf6f88b2ba4ab2018942eeafb16fc2e5de407
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/431946152/how-to-hack-roblox-accounts-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-search-for-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-robux-hack-generator_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/roblox-the-pizzeria-rp-remastered-give-all-coins-hack-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-do-you-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-download-roblox-for-windows-10_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-cheat-in-roblox-get-eaten_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-dantdm-hair-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-holy-sword-cheats_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/dragon-ball-z-rage-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/youtube-free-roblox-account_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_off00002f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7C 22676 bytes
SHA-256: e849245b094a5d89cd80685a6a5a553b1bf0c284903ca2559d2d2a42d37b68dd
font_01_sfnt_off00006276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6276 19064 bytes
SHA-256: 8c571bf80081aaa5c2be303b8c9fe18b31c5334a74c17f7b55d65649f5ee093a

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