Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d498a04900eceab…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 20:14:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2658ca121a809be9a32807df828eea59 SHA-1: 1030c1343e07e9854598960eb107e4b3c7f644cb SHA-256: 9d498a04900eceab0df6cdff6e89c00af1a654b0bcc423a7561548f9b9ebd8c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts numerous other malicious PDF files. The document's content and embedded links strongly suggest a phishing or scam campaign aimed at users seeking in-game advantages.

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/431946152/where-to-get-free-robux-game-hack In PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-apps-that-dont-use-adgates_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/hack-robux-new-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/promocodes-roblox-free_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/robux-get-com_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/admin-for-roblox-hack_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/rbx-roblox_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-codes-october-2021_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/youtube-how-to-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/fe-hacks-roblox-free_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-codes-2021_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_off00002d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2E 21932 bytes
SHA-256: e6d9b835a62c63c66e78fb38e029835a745d34e78084ec448979d5007cbc48e7
font_01_sfnt_off00005dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCA 19184 bytes
SHA-256: e942b93b228ea09a2b9b89b185e62feaf889c583a2152a741a620a9da1dbb754

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