Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bb7ee5bed6a7564…

MALICIOUS

PDF

46.8 KB Created: 2021-05-12 21:44:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: dc47724c8f0f6e86ee5dda74a1a1dfd8 SHA-1: d065d2a4675aae060c43ee542544cf8286ff5e69 SHA-256: 9bb7ee5bed6a75641dd2c8eb7a85baae61675435175976f3552c89e638fd8172
200 Risk Score

Malware Insights

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

The PDF document displays a fake CAPTCHA and uses lure text related to game hacks and currency generators to entice users. It contains numerous links to known malicious redirectors and potentially malicious PDF files hosted on external domains. The primary goal appears to be directing users to these external resources, which likely host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-person-game-hack In PDF document text
    • http://iedarelief.us/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/free-800-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/coin-spin_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/get-robux-now_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.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/roblox-re_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6F 27504 bytes
SHA-256: 0eadd12ecfe156360096befe44a9bf72c979f213941b31a71d38e82aaa153eb0
font_01_sfnt_off00008b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B02 3000 bytes
SHA-256: bc0aa45481ec98ce9e48e581caa4a55aa8e2c2120c1d1b664a9af7c3f3067402
font_02_sfnt_off00009568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9568 17936 bytes
SHA-256: f4f04d29b57f2a72625fc9e352393071ee42f2c511d00c6ae5a127c0a3ffd084

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