Malicious PDF — malware analysis report

Static analysis result for SHA-256 19adbf41566274f3…

MALICIOUS

PDF

51.0 KB Created: 2021-06-04 03:43:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b998ce6bcb6c0d8be864ddd0646d7f80 SHA-1: 8780db3b7a5d022a7d4e8cc5a5e6ff383bbd0f3f SHA-256: 19adbf41566274f38c65e353ed7768b7c4277ed07995a2ab1797ec42509cd5f6
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 0.9713

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 https://netcdn.online/app/406889139/coin-master-hack-355-game-hack PDF link annotation
    • http://perpustakaan.stietenggarong.ac.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-earn_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-generator_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B8 26116 bytes
SHA-256: 419429369d7522c997d36b5a0cf27864d5e5b2341d938730955a633ee454c3ce
font_01_sfnt_off00008d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5A 4028 bytes
SHA-256: 6a4891da4f8b73c02e22ecd6fa566d6bb4f5f2d5575b30a343f3d3c5e0919267
font_02_sfnt_off00009afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFD 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000a4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4ED 18024 bytes
SHA-256: b68c5b852f7a0dc4cae71688da1440f4897758d0690ddbd86075287d930b5650

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