Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa05770da708485…

MALICIOUS

PDF

34.2 KB Created: 2021-06-20 03:21:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fbab403f2fe6d5b718ccc0fa55c7a574 SHA-1: cc5e9c552fd3df47b8f7750e261c6062e8c84464 SHA-256: 8fa05770da7084853ce4a2ec7eeda57d5c5cccecece0a3ff258e878fad90f699
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-to-get-free-robux-and-tix-on-ipad-game-hack PDF link annotation
    • http://montchanintt.fr/images/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-hack-roblox-with-lucky-patcher-no-root_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/whtch-day-dose-john-doe-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/pokemon-go-5-free-raid-pass_GM1094591345.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-18_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/free-roblox-card_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_off00002e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E79 22276 bytes
SHA-256: 64b61803e688a673e5c1318dafd1350f25c1a108fd444d1f2ad2ff1319b29f4d
font_01_sfnt_off00005f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7A 19452 bytes
SHA-256: 1342eec450650d66d43b0d99150b69947b9eb23c6ed31fee3bd427b0e145791a

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