Malicious PDF — malware analysis report

Static analysis result for SHA-256 86af68d5b9654234…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 08:10:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 83341eddcb3b2831bb1d9e658ac01a67 SHA-1: 406925e92a43b4556c2ab9925e01d1668d4be7fc SHA-256: 86af68d5b9654234c38565f37d8e572804b90cec220531da2c92c06af1cc58db
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a 'free generator / game hack' which is a common tactic to trick users into clicking malicious links. The document displays a fake CAPTCHA to further entice users to interact with the embedded link, which leads to a known malicious domain. This suggests the document is a phishing or malware distribution lure, likely intended to exploit users seeking in-game advantages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/431946152/roblox-free-accessories-game-hack PDF link annotation
    • http://nebraskahospitalityhalloffame.com/images/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/easy-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/worst-roblox-avatars_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004969.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4969 25012 bytes
SHA-256: d0593b87b216021249026d3a93905dfdf090cbd88d0afce2206e34ba9242363f
font_01_sfnt_off0000839b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x839B 18068 bytes
SHA-256: 631d65c1f3e2a0dc4ab1c15de4169549fc1962130d484212c2774f26f0b2a84d

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