Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d1eb7ffffa1db9…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 07:28:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 789bcf36d215b7f0989a145d59603edd SHA-1: 59b6bc2e739c4c3eff00054e8100aaa0beef7198 SHA-256: b0d1eb7ffffa1db988d8c544fd4ecab54b4191f596960a0237f103e08a600fbd
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links, including one to 'netcdn.co', that promise free game items and hacks for popular games like Roblox and Coin Master. This indicates a lure-based attack, likely designed to redirect users to malicious websites for malware downloads or phishing. The heuristic 'PDF_SEO_LINK_FARM' further suggests a large number of outbound links, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.co/app/431946152/how-to-get-expensive-roblox-items-for-free-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/god-mode-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-thinknoodles-free-fall_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hacking-app-for-hacking-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-building-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-robux-hack-generate-99999-robux-loladarnel_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/nonsense-diamond-hack-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/real-no-hummon-verification-robux-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E0 22396 bytes
SHA-256: 6600da49b7f517a0ea1f662aa84aa20e10bd448843fa28c20c4ecafb047a5d6a
font_01_sfnt_off000062a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A5 19400 bytes
SHA-256: 2a8161d5e64b86e0c97c273e1ba6a13a253fbc66e1ffc0e1135498f199aef348

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