Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8777e91c41ce483…

MALICIOUS

PDF

35.5 KB Created: 2021-06-19 21:30:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0438f8c6aa4043c6b003bf19ad7be628 SHA-1: 4adf5a95cc8290cc87f1a094284a93fb97d5387c SHA-256: e8777e91c41ce48329ec81ab4496e70e598826c7bfbb48f55ecbfd7393d78fa4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to 'roblox-synapse-exploit-download-free-game-hack', indicating a lure for game cheats or exploits. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the nature of the lures suggest the document is designed to redirect users to malicious sites for downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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/roblox-synapse-exploit-download-free-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-use-hacks-on-roblox-pet-sim-2_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-a-roblox-account-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-knives-in-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hire-a-hacker-for-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/one-item-that-makes-everything-in-catalog-free-for-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-jailbreak-hack-injector_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-pet-simulator-lua-script-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-games-that-give-you-robux-for-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
font_00_sfnt_off0000306b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306B 22852 bytes
SHA-256: c54421eb316c47c9bef1b9dfca65f45500e338de95b9b8d01c20867319cdd5aa
font_01_sfnt_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 19736 bytes
SHA-256: bdc52b155a02e358ac3b09c6d4e9ef487cebd67a069b403dcb8a7188fd7f6488

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