Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d4ccc1c895d9bf4…

MALICIOUS

PDF

41.1 KB Created: 2021-05-10 17:45:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 9e0f958de8c2e63698287ce98203f63c SHA-1: d1b97695c0ccd16889e6f2a6284dc5379cd9c8e5 SHA-256: 8d4ccc1c895d9bf4533e212189590f22fa28adc4d7f5e65403627c032ab586be
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure is a 'free generator / game hack' for Coin Master, directing users to the URL https://netcdn.xyz/app/406889139/free-spin-coin-master-hack-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/free-spin-coin-master-hack-2021-game-hack In PDF document text
    • http://sttlets.education/senayan//repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/moon-active-games_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-hair-roblox_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
stream_003_off0000487b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487B 23452 bytes
SHA-256: 1910acb9e6b84c4a761d35af96068aae18665d45891a1d5dc25c11455525f8dd
font_01_sfnt_off00007da2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA2 18456 bytes
SHA-256: fb2d798100dc09ab9990163d1a71849b6ff749ff3ac9d3c750144c56980b6f28

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