Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb5887b83a1f0ef…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 08:51:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 9aae088967dce12794362eb3f4c28837 SHA-1: 09c1aff786c84b2c99a9f4e080d3bbf0a76329d7 SHA-256: deb5887b83a1f0ef605a015eaaf7cac31f219598748bda436faacd112bfac4df
160 Risk Score

Malware Insights

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

The PDF contains links to a 'free generator / game hack' lure, which redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains references to Roblox and game hacks, reinforcing the lure. The embedded URLs suggest a phishing or scam attempt designed to trick users into visiting malicious sites, likely to download further malware or steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/roblox-redeem-card-codes-free-game-hack In PDF document text
    • https://sunnygarden.com.tw/image/data/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/hacks-roblox-royall-jely_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-tiktok-likes-for-free_GM835599320.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_004_off00004dbe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DBE 24352 bytes
SHA-256: 8819a8cd84a47a9871c0b4435dd83bb0b3379aae9dcb7aae7edc14e77e211dc9
font_01_sfnt_off000085ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FF 18612 bytes
SHA-256: a80930eafb0fa49b70c8b74e6f01afa17dc8341ac3dd6991c9bc21ab4de62243

Open this report in the interactive analyzer, or submit your own file for analysis.