Malicious PDF — malware analysis report

Static analysis result for SHA-256 5019811f79336888…

MALICIOUS

PDF

35.7 KB Created: 2021-06-28 09:27:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a3bd0e1cac2a102b9f9eec7997a63d99 SHA-1: 50e3929b4e0903f1fc56dfe715136147ab51b1c1 SHA-256: 5019811f79336888ee7b373268bd55d8d88f57ee147d1e0533666f3fe1989cfb
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.co/app/431946152/how-many-warning-for-hacking-do-you-get-in-roblox-game-hack PDF link annotation
    • http://uilis.unsyiah.ac.id/ebook/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/car-crushers-2-hack-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/google-how-do-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/super-saiyan-simulator-2-roblox-hack_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/more-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/clash-royale-legendary-cards-hack-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-royalty-free-music-ominous-60_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-sex-script-cheat-engine_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-game-unlock-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-works-100_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/bloxburg-free-no-robux_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_off0000317f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317F 22252 bytes
SHA-256: 5e1d3e0614228636c1253137d24f2cd849db24a5f28c88b69e7f1f40695a31ed
font_01_sfnt_off000062ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EF 20252 bytes
SHA-256: 9fb59e1008fba37dbc7f356e4cb05508dd87d73f2107d49039318cd5bfc0fac4

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