Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb1c509a0bff045…

MALICIOUS

PDF

41.0 KB Created: 2021-05-18 00:02:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1c2cc3a3e691040b5cb7e46f46cb3dd7 SHA-1: 1423d4b7be49fed8cac369e6cf4d4aa70e392f0f SHA-256: 0cb1c509a0bff04527c327c1970b5de243814abc1520bd40b96db913243aa6bc
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/master-coin-free-spin-daily-game-hack PDF link annotation
    • http://famoirs.co.uk/images/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://famoirs.co.uk/images/free-coin-app_GM406889139.pdfIn PDF document text
    • http://famoirs.co.uk/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://famoirs.co.uk/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://famoirs.co.uk/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://famoirs.co.uk/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://famoirs.co.uk/images/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://famoirs.co.uk/images/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://famoirs.co.uk/images/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://famoirs.co.uk/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://famoirs.co.uk/images/free-spin-link-coin-master_GM406889139.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
stream_003_off000044ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44FF 24728 bytes
SHA-256: 78f6699de7d367891aff3a5d21a92927e0d4ffb47e341403023a29f2ee756b55
font_01_sfnt_off00007daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAF 18308 bytes
SHA-256: 29cb14730145ee7b34c09c890f7b8837377acbe26d0b8b5df788708214c202fb

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