Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b7dd5a1e2db223c…

MALICIOUS

PDF

45.3 KB Created: 2021-05-13 16:35:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: cf288cc8358b5ccffd12d313f89081da SHA-1: 67b627e2bd5f2dfb88af4b362dd94899eab60f1e SHA-256: 8b7dd5a1e2db223c23a8d64c690d9f285c82f9edc5997faf04d8e5679771a687
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-get-real-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful content.

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 https://netcdn.xyz/app/431946152/how-to-get-real-robux-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-but_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/get-free-spins-on-coin-master_GM406889139.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_off00004d5e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D5E 28104 bytes
SHA-256: 3b8a559cbb4b9b31d62a06c8c1a018d9c848213b056384a981f58c2c1dd86f3a
font_01_sfnt_off00008e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3A 18420 bytes
SHA-256: c00d446c8157095122135a55285e302a912096a3f0aa6b81bb2c06de09994ea7

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