Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd953fc62a917f41…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 17:54:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 21b929b62edc42709edfd848bf3b238f SHA-1: 2c0d340a1a3fd40418b53f30d2ac9d190faf6d2a SHA-256: bd953fc62a917f41f0c22c81a95fe147f1f2418813144d68d8436ed079bb7036
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/479516143/how-to-make-a-minecraft-server-for-free-java-game-hack PDF link annotation
    • http://samavetpharm.com/userfiles/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/synapse-level-7-exploit-crack-download-free-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/pokemon-go-free-legendary_GM1094591345.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/tiktok-free-robux_GM835599320.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-roblox-t-shirts-thats-r-cool_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-cracked-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_off0000304e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304E 21940 bytes
SHA-256: a18ed742c05f2a6a7f812deeffe5f08f052b64955594762fa1c5f969f6688b82
font_01_sfnt_off000060b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 18612 bytes
SHA-256: 72eee0763f35a52e2643d2996ff671f9a9f03ad894d8023308a2820f1b3dae8e

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