Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabca35c20d75bba…

MALICIOUS

PDF

36.6 KB Created: 2021-07-04 14:10:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 027519f039668e147f44ae99d3bec1e5 SHA-1: e4e055f2ad237a867d56ffaf4a195fab0720bca7 SHA-256: eabca35c20d75bbaac286f5c98d764b116b996ee0f3edb55323c6f7f952732fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/406889139/master-coin-free-spin-daily-game-hack. This redirector is likely used to deliver a second-stage payload or phish for credentials related to online games. The document body and embedded URLs suggest a lure related to game hacks and in-game currency.

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/master-coin-free-spin-daily-game-hack In PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/hack-roblox-account-kali-linux_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/roblox-crown-free_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/roblox-phantom-forces-cheat-table_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/unpatchable-robux-hack_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/roblox-ingame-item-hack_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/games-like-roblox-and-minecraft-but-free_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-unlimited-no-wait-robux_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/robux_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/how-to-hack-mad-city-roblox-menu_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/royale-hich-dimond-hack-2021-roblox_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_off000037f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37F8 22940 bytes
SHA-256: 96446541674dc1ac43e9b8c002df692c95bd3f595d34f21515fa44bded6ccc72
font_01_sfnt_off00006b84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B84 18596 bytes
SHA-256: 115892fac058e21728dd73f14dd50efb9625691fb0bdc47d6e9343c2bb96a73b

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