Malicious PDF — malware analysis report

Static analysis result for SHA-256 b23014aff2053992…

MALICIOUS

PDF

44.4 KB Created: 2021-05-19 03:34:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb62ad5d69cf2f20bff49eb03d8d8907 SHA-1: 7d829539ed122f5fceedf67615087955e86703f4 SHA-256: b23014aff20539920d962348d1a234ca08534de364739e9389ca4e8c38a4b420
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a malicious domain, identified as a 'free generator / game hack' lure. The ML classifier also flagged this PDF as malicious. The embedded links likely serve to download a second-stage payload or redirect the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/get-coin-master-spins-free-game-hack In PDF document text
    • https://new-era.com.tw/image/data/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/wurst_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-source_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a43.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A43 24612 bytes
SHA-256: 6ad5a06466ccad7b5ca8a5876f5cd28fa6624a413555ff20820366ff551d2b6b
font_01_sfnt_off000081e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E6 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00008c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C00 17884 bytes
SHA-256: 876927319d3d02f2246654e6bcbdf62d71497dcf4510b2be4e7f27a5ee8d82be

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