Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3d717d14fbbe27…

MALICIOUS

PDF

32.8 KB Created: 2021-06-29 06:32:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f803e137f07ce08d93174f01021efe04 SHA-1: aa3f22cfd403e4359c7bf3256f7209d05bd45630 SHA-256: 8f3d717d14fbbe27f385eb4cf1ee9c906030f18379811d8c7f20f2f97eb9e16e
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 0.9824

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/free-robux-roblox-accounts-game-hack PDF link annotation
    • http://sttlets.education/senayan//repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/dailyrobux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-hats-that-are-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/cheat-roblox-skin_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/oprewards-roblox-free-bloxburg_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/cheat-tables-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/hacks-de-roblox-para-cualquier-los-juegos_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-ipad-only-2021-youtube_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/best-minecraft-hacked-client_GM479516143.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_off00002b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B72 22008 bytes
SHA-256: 06ab8fd632e6cd23a5da9e7ebd8431f9d75e5c9f5cf8a6a30746aa28e7d41ec5
font_01_sfnt_off00005bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD7 18896 bytes
SHA-256: 43931dee9b87745761a3a687824bd616f61ea83f19329cf712fdd29e7d585c6f

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