Malicious PDF — malware analysis report

Static analysis result for SHA-256 beec0479405dcb7b…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 05:21:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 98218dfe5fed95a7b04b1eeb703dfe98 SHA-1: ab0fafe01cf2b0038045cf4caefc63f70c313390 SHA-256: beec0479405dcb7b0c7ca7ac57ee061052a1f7231d7029f9a61887d8114b499b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary redirector URL identified is http://netcdn.tw/app/406889139/coin-master-play-online-free-game-hack. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing pages. No scripts were extracted from this sample.

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-play-online-free-game-hack In PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hacking-is-allowed-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F76 22404 bytes
SHA-256: 58d36474feca538aa335622ac28b79c3994047c841aa0caf9d75b8e56801afcd
font_01_sfnt_off0000614a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614A 18408 bytes
SHA-256: 2eb0d828dfa855e50b6f487a3982aca0132c195de516b629f3de2a521e966112

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