Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f8470a01c88a46…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 09:19:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3137c6b6ca12c607e9a1057647b247eb SHA-1: 6a27d923c7d9300cddfe620b9b8693da8ebc08d0 SHA-256: d0f8470a01c88a46e9d4fc6487e201ba408c9dc7dd09caf627a63111b6897ff2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically promoting 'free generators' and 'game hacks'. The document body and heuristics indicate a lure for potentially unwanted software or further malicious content, disguised as game-related downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/479516143/minecraft-maps-pe-free-download-game-hack In PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/code-free-robux_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-now-for-free-robux_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/tiktok-free-zone_GM835599320.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/robux-hack_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-spin-link_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-get-free-vip-present-on-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/roblox-speed-and-jump-hack_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-get-free-robux-no-installing-apps_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-open-cheat-engine-in-roblox-2021_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
font_00_sfnt_off00003255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3255 22336 bytes
SHA-256: 5c80eeee5fef7768911293d98e3803c01dca5e2758ea59e5b167863eda9afb56
font_01_sfnt_off000063b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B3 18908 bytes
SHA-256: 10b4adb4db883c55d3f439ff3d3cd4694c9c956be768705e88a0f2d3b984931b

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