Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b1d675f2aee6f0…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 15:46:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 05a4d6cfe05833f25895922c3736ed5d SHA-1: 1c93e48580b06d5ff815af352d1d2851f497ead0 SHA-256: e1b1d675f2aee6f0a6fe01ffee4115cbfb4543276edf7389801c6f1eb85043e4
160 Risk Score

Malware Insights

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

This PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically targeting users with lures for game hacks and virtual currency. The primary redirector URL is http://netcdn.tw/app/431946152/roblox-free-robux-codes-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted from this sample.

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.tw/app/431946152/roblox-free-robux-codes-game-hack In PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/get-robux-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/how-to-get-free-robux-pastebin-2021-javascript_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/roblox-lucky-block-battlegrounds-hack_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/free-robu-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/dailyrobux_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/pokemon-go-free-avatar-items_GM1094591345.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • http://mtsn2ende.com/__statics/gudangsoal/files/free-minecraft-codes_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_off00002e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5D 22652 bytes
SHA-256: 95b7f5f72190b1370de29c3bc1f6c7f8ab7ae0e096e9a0fd5196dfd110583b64
font_01_sfnt_off00006107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 18964 bytes
SHA-256: a55805342354896b15de53c372ce6b4f67675692ecef428388acdddaf3dfd905

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