Malicious PDF — malware analysis report

Static analysis result for SHA-256 03246b04f0636f0d…

MALICIOUS

PDF

35.3 KB Created: 2021-06-22 09:51:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d3dc79f9d985dae2fa955d9e367fb1c8 SHA-1: e1f167ae9134f3b98b3cfc55b51da9318fe4da2d SHA-256: 03246b04f0636f0dd4bddc387e97ed62244a03ef1449302458e87302e7caa978
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free generators" and "game hacks" for popular games. The primary lure appears to be a "free spins for Coin Master" scam. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to drive traffic to potentially harmful websites. No scripts were extracted, but the PDF's nature as a lure is clear.

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.co/app/406889139/free-spins-for-coin-master-2021-game-hack In PDF document text
    • https://jp.esuhai.com/upload/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/hack-para-las-contraseas-de-roblox_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/best-star-wars-maps-free-modeled-roblox_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-pets-roblox_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/minecraft-images-free_GM479516143.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_off000033d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D5 22620 bytes
SHA-256: da68c01e16e8107af734e5882c47fb7f2377990c72ad55be57e5ff0a4751bd51
font_01_sfnt_off00006665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6665 18576 bytes
SHA-256: fb0fb59ed2c1a9034e606a4b9af272ef40c933264071e94cfd5fd7ab3c408864

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