Malicious PDF — malware analysis report

Static analysis result for SHA-256 665d1ed2b35eb2ce…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 15:36:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0f59a03cc86f9a4d56f973f568045b27 SHA-1: 2078e3ff3f5073dc69e8521f46564670d6d0911a SHA-256: 665d1ed2b35eb2ced06c842812dd14f7a4077ce08288d35ac940dc3305a7f881
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/835599320/is-tiktok-free-game-hack PDF link annotation
    • http://digilib.stimlog.ac.id/repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/account-hacker-roblox-patebin_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/leafy-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/counter-blox-roblox-offensive-wall-hacks-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-survive-and-kill-the-killers-in-area-51-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-gamepass-2021-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-tycoon-hack-script_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-polo-ralph-lauren-free-shirt_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/install-roblox-jailbreak-hacks_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3488 22636 bytes
SHA-256: 1e08bf3ecfcdde35aa7be7e431fb5dc74ca8a72667861c56ba983f07ab66906a
font_01_sfnt_off000066fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FB 17972 bytes
SHA-256: 1ad9b968f8d868dc9306eb656e42f80411177ac895833eed5c4e9bc3c7375aa9

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