Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3faa8e61205279d…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 20:00:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1c232acbc61d5f1742908b5afb013a9b SHA-1: 1b705549d1745c680c1dfc6babdb4ea0b88b541b SHA-256: b3faa8e61205279d39fdb094d4aba3ba99527d6cc8cdc744d0b4a4d2ad5cc33b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/coin-master-free-2021-spin-link-game-hack. The document body and embedded links are designed to lure users with promises of game hacks and free currency, a common social engineering tactic. The presence of these links strongly suggests the document is intended to lead users to malicious sites, likely for further exploitation or credential harvesting.

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/406889139/coin-master-free-2021-spin-link-game-hack In PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-a-gamepass-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/hack-para-roblox-dragon-ball-z-rage_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-without-extra_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-card-numbers_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-plugin_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-badges-hack_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/add-robux-free_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/hack-master-coin-pc_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
font_00_sfnt_off00003121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3121 22556 bytes
SHA-256: 8d345f81d3e1fffb332844212937c7a56fe83374f1f74bdb556b4a47e78298f9
font_01_sfnt_off00006364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6364 18748 bytes
SHA-256: 96324e6ce0c81689c6b9eecc120e41c8c4a64b67d53a9c8495a7c5a7aa900936

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