Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f22b09a0f94bac4…

MALICIOUS

PDF

44.4 KB Created: 2021-05-15 23:10:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 34f25c200cb7288dfdf26b0196c96fcb SHA-1: 10e59a3a07129dfb2afd2d93844e77b416d04b15 SHA-256: 4f22b09a0f94bac4c20cf48567770f3a38b715d11eeceb2753051b2219bf7822
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document presents a fake CAPTCHA or human verification prompt to trick users into clicking a link, which is a common social engineering tactic. The embedded URI points to a URL that likely hosts a malicious payload. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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/how-to-get-free-skins-in-roblox-game-hack PDF link annotation
    • http://iedarelief.us/images/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/coinmaster_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/roblox-controversy_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-get-free-roblox-money_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_off00004d46.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D46 26644 bytes
SHA-256: 2b7af1345b9705f5db449292dcc291f14edf15e8f58df5d73321952c648ff7e4
font_01_sfnt_off00008adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADC 18504 bytes
SHA-256: ae7b9a4d98c4f3218572a7a5b8a0359ca417a6e67a065e6d54194df4d1c80092

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