Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2a12709558a14c…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 13:42:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1f19ef06c58df2150f575b8cc1193e36 SHA-1: c35d56bdddbbb5e84725b90bb8fc90f8e2c32b98 SHA-256: ee2a12709558a14c6dfbf4d9d51fed6475346b571959c03dc65289fc0d54c452
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and websites offering game hacks and cheats, indicating a lure for users to download potentially malicious content. The ML classifier also flagged this PDF as malicious. The embedded URLs likely lead to a second-stage download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/roblox-jailbreak-hack-download-game-hack In PDF document text
    • http://library.acehresearch.org/repository/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/robux-apk_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-hack-people-in-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_off00004d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D7A 28516 bytes
SHA-256: 636f51b8d1b1e48ac1878cf1b77d6489276eae5ec9b3b7089131bf1ba7dd7b37
font_01_sfnt_off00008d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D14 18972 bytes
SHA-256: 261da8cecf88d9fe7cdfdd42a26ac06d4c96d8a11aebf729db611f6a559eb8d5

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