Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee45c9f61eb65983…

MALICIOUS

PDF

33.1 KB Created: 2021-06-20 13:26:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 04241d35c6bbdd0d4cce61f87643cc8a SHA-1: 89f13c3f900a3638f058981d4f504f3882965afb SHA-256: ee45c9f61eb65983618fea3eb56a5dd8187101b101ccad7d6fae35d1a3b5a0b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors and further malicious PDFs, masquerading as 'game hacks' and 'free currency generators'. The primary lure is the promise of 'Robux Hack Free Robux'. The embedded URLs are designed to lead the user to download further malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.co/app/431946152/robux-hack-free-robux-game-hack In PDF document text
    • http://kierowcyhgv.uk/images/unlimited-robux-hack-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/free-admin-pizza-roblox_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/free-exploits-for-roblox-mac_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/roblox-server-free-app_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/hacking-forums-roblox_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/new-roblox-exploit-hack-proxo_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://kierowcyhgv.uk/images/how-to-get-free-braces-on-roblox_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/free-robux-games_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kierowcyhgv.uk/images/coin-master-twitter_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
font_00_sfnt_off00002b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B96 22296 bytes
SHA-256: b4311ae2f23d76f9f4084f1f5abb431e236979adce06125785d45f32f91a25b2
font_01_sfnt_off00005cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB1 18884 bytes
SHA-256: 28c83382703d1552e66c4ba49065192da850ec7c15b1cba66d0a11ad7ce6efaa

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