Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6beddafd389704…

MALICIOUS

PDF

33.7 KB Created: 2021-06-22 06:34:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 1edc3026248e94913c046e7f99b185d7 SHA-1: 299631abd33063ba37ab44e8619f88d8f4d6db55 SHA-256: 0c6beddafd389704ed594bace4b4bd92e154a8c489c416c2ad5b2d14a8316115
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text lures related to 'free Robux' and game hacks, directing users to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded URLs and document body content strongly suggest a phishing or scam attempt to redirect users to potentially malicious sites.

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/free-robux-hack-2021-no-survey-game-hack In PDF document text
    • https://www.manmed.info:443/images/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/aroboy-10-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-boy-hair-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-rich-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/hire-a-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/robux-cheat-app_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/tiktok-free-recharge_GM835599320.pdfIn PDF document text
    • https://www.manmed.info:443/images/freer-tiktok_GM835599320.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-how-to-use-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-execute-my-hack-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/copy-and-paste-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.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_off00002c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C67 22000 bytes
SHA-256: 3ae2379235a964be2ca38d10f040345100e92fd824f0c036fdfac0a751645643
font_01_sfnt_off00005d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D02 19584 bytes
SHA-256: 4a4e7c0ce8b59158b766b3065a23b928a3ba7c6432416fec9872886744955e77

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