Malicious PDF — malware analysis report

Static analysis result for SHA-256 833aa17b421ad789…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 09:34:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9e73313cd4d1f4b47cc554c38b315213 SHA-1: eab400a89a8331998d706a69c8ac7f2f8d7119da SHA-256: 833aa17b421ad789db5f420dd465ac29847d6a259bba664b401a721ce4592f9a
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/406889139/coin-master-coins-free-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robux-hack-2021-no-download_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-hair-modles-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/earn-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-stuff-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-stuff-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/get-free-obc-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-items-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/google-how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-with-no-human-verification_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_off000032cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CB 22304 bytes
SHA-256: 9d6ad0425c4954d5772b238c046ce293b90728cb39fa304383d4b5d0a6b3f405
font_01_sfnt_off00006449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6449 17996 bytes
SHA-256: 2ec206c530faa3d40eac36f14655b3e9b935e9ff12c648634e177d5bc9421463

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