Malicious PDF — malware analysis report

Static analysis result for SHA-256 de001854519e7558…

MALICIOUS

PDF

44.3 KB Created: 2021-06-04 00:58:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8adf51950fc970db43482afeb3516b53 SHA-1: 7862e241c0d47f9c921c2e6fbebd62edf830f68d SHA-256: de001854519e7558f7bf5c79c1321ea52c74d32d83f4b8b68ea36cb2c2388269
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 0.9865

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-free-spins-gratis-game-hack PDF link annotation
    • http://katalog.stikesmukla.ac.id/repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-hack-tool-apk-download_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
stream_004_off000052a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52A7 25028 bytes
SHA-256: a97bfdf0b2c97d16b13e6a45362a4cf23c27f12434b92511c8340359917bc060
font_01_sfnt_off00008bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF4 17884 bytes
SHA-256: 61e0f30a550a552155c2db6a7959ee396d6a34ca680bb4676c065f633eb1cbfa

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