Malicious PDF — malware analysis report

Static analysis result for SHA-256 72355c7536ee2cca…

MALICIOUS

PDF

42.8 KB Created: 2021-05-18 23:50:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fb9995de25bb4884481d18fcd6f5df5a SHA-1: c5a6f331c8b529a0e3f8e229d37937fc5394ff28 SHA-256: 72355c7536ee2ccaa98970c04a5fbfd526f02741825dbcef84d326f59cd95378
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 0.9971

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.xyz/app/406889139/mangocheats-com-hack-coin-master-cheat-game-hack PDF link annotation
    • http://lib.kesdammedan.ac.id//repository/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/bux-gg-robux-free_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
stream_003_off00004c1a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C1A 24888 bytes
SHA-256: ea4ce271f09b8b0658edb6ec7c0ca9af04ad9d35edbea5632e987cd4531ebe11
font_01_sfnt_off000084b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B8 18428 bytes
SHA-256: 4e99dec5d3f02dcbc06ca26300d3045f9b8d8d35bff9f7dc87105fb536b7f18c

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