Malicious PDF — malware analysis report

Static analysis result for SHA-256 b86270078e259ca6…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 11:33:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 85114c760ad4466a64473144f120531e SHA-1: acd3d34f02eb4a1dc01a9d5b02587f0cb763f2a7 SHA-256: b86270078e259ca60c667d610cb0bdd11c56eb87138dfba0ea3902caf1018f84
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 'free generators' and 'game hacks'. The primary lure appears to be related to Coin Master and Roblox, aiming to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious redirector links and the lure content strongly suggest a phishing or scamming attempt.

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/406889139/200-free-spins-coin-master-game-hack In PDF document text
    • http://new-era.com.tw/image/data/files/roblox-free-app-game_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-scipt_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-lapd-set-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-hack-roblox-jailbreak-with_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/hacking-code-roblox_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-latest-mod-apk-free-download_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_off00002ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF8 22496 bytes
SHA-256: 961523780fe372e6aeef773bbb52a2e5aa2724797744d487ade4210e59844e45
font_01_sfnt_off0000611c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611C 18472 bytes
SHA-256: 9bbada0425f487f3c4a68143d9c445a4c5f68259678acbb3e596bfcd884a6068

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