Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c3486a227bf79e…

MALICIOUS

PDF

35.4 KB Created: 2021-06-27 10:04:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 423a80deb5e8c571c951114ef2feae92 SHA-1: 088be4ab4a6eab63e283ab016cf5e3b020b771e2 SHA-256: 06c3486a227bf79e16f51042759263e747aa0b2a17bcf1598b7ffbe56b7f5e32
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or malware distribution attempt. The document body, though partially corrupted, contains URLs that are consistent with the heuristic findings. The primary goal appears to be directing users to external sites that likely host malicious payloads or further phishing content.

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/alone-battle-royale-hacks-roblox-game-hack In PDF document text
    • http://proyetec.com.co/aym_image/files/hack-to-find-people-ingame-in-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/auto-clicker-download-free-roblox_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/robux-com-free_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
stream_002_off000031e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E0 22972 bytes
SHA-256: 52f6f8e4987acabfff962580322b6e95199d87a62c499e64909b8c84c5e6b43e
font_01_sfnt_off000065a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A7 18940 bytes
SHA-256: d823158f6d8687fe9dab3565a215677b50e1a8ece82ac036351391270fdf9c0e

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