Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2eddee3031f4e1…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 23:55:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b01a6f05c58d2d493f1cd0a1ee5a947d SHA-1: f451d3b180d2e844d74542fe24c0f70c63a8dd6c SHA-256: 6b2eddee3031f4e1c454ab719bd5d17bcde88cece67524568a504e4a4d71ddc0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains lures for game hacks and free currency, directing users to external URLs. The primary URL, http://netcdn.tw/app/406889139/how-do-i-get-free-spins-in-coin-master-game-hack, is flagged as a redirector for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely leading to further malicious downloads or credential harvesting.

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.tw/app/406889139/how-do-i-get-free-spins-in-coin-master-game-hack PDF link annotation
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/i-want-to-hack-roblox-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-generator-group_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-cheat-in-roblox-glitch_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/coolest-outfits-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-snow-shoveling-simulator-free-santa_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-generator-mobile_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-events-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/easy-free-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/badge-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-minecraft-maps_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
stream_002_off000032ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BA 22688 bytes
SHA-256: 7a3c5ea4df3ed2516e166659cf3412d9f1e20ba66b6276de4cc6fc2802942991
font_01_sfnt_off0000653f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653F 18508 bytes
SHA-256: 5fa4adbbb2c865a19aa6c2d7661c2270d24b48d73078d2e2d8c4fb61005cd4a1

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