Malicious PDF — malware analysis report

Static analysis result for SHA-256 7117208a3109d797…

MALICIOUS

PDF

33.3 KB Created: 2021-06-20 18:27:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d3f93e295cb547676eeab7914794a90b SHA-1: c628b0c0c3454d3aa089716b9e003a55fa8465f9 SHA-256: 7117208a3109d79747a75c25b0caacd064b7066a17be641fc0e6f6506fe89384
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed as a lure, presenting a "Roblox Hack Tool" to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/1-000-subscriber-roblox-hack-tool-game-hack, likely leads to a malicious download or a phishing page. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple game-hack-related lures reinforces the malicious intent. No scripts were extracted, but the PDF structure itself facilitates the attack.

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/431946152/1-000-subscriber-roblox-hack-tool-game-hack PDF link annotation
    • http://www.sovtigaz.ru/f/files/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-hack-roblox-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-how-to-get-free-gear-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-ghost-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/minecraft-dungeons-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_off00002cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEA 21656 bytes
SHA-256: 15b0013b66be621add2633b462d58cc4b7742b865f1e00bb4777acac432fa9a9
font_01_sfnt_off00005c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9E 19196 bytes
SHA-256: aad7844578760b748ed1c20c6b9678c829101be8c8fd9e5ed46b7de1e34514f7