Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc66a788fc60a6e2…

MALICIOUS

PDF

49.6 KB Created: 2021-05-17 02:15:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fce1764fb36befdb89976fa0da74b54d SHA-1: aad9632b6a033fe4cebb81804ae61132ca3f2cc3 SHA-256: fc66a788fc60a6e2099975d867f95505235fee71b5e477819f65c5be338b013c
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 0.8642

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/coin-master-app-game-hack PDF link annotation
    • http://samavetpharm.com/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/i-want-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-in-roblox-prison-life_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E1 24908 bytes
SHA-256: 363d1ec007a9ab18668b582ae14b17dba0cd9608c271c5577e3107f3dfa950d6
font_01_sfnt_off00007ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF9 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7A 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off0000a104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA104 17724 bytes
SHA-256: 339b5b6fe59ead3b36abdaa7c47f6a088c65e9e818337b9290cb92488f21cdbf

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