Malicious PDF — malware analysis report

Static analysis result for SHA-256 093c6a017a8e01dd…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 14:47:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: bf40a087ecb9f4152ef23975ec0ce8f9 SHA-1: 37a86623621f5b752499432e2c65e7403830846c SHA-256: 093c6a017a8e01dda36b471017cef8c6b03b174af21c41d2adb07b1a8b5c4b59
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators' for in-game currency. The heuristic findings confirm these links point to known malicious redirectors and lure users with promises of free items. The document body and embedded URLs strongly suggest a phishing or scam attempt to drive traffic to potentially harmful websites.

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/robux-generator-without-human-verification-2021-game-hack In PDF document text
    • http://library.acehresearch.org/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-hack-no-human-verification-2021-pc_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-accounts-for-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-robux-free-no-scam_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/form-1-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-free-ss_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/create-free-dominus-hat-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/300-roblox-accounts-free-v34m_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spins-link-2021-today_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_off00002eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEB 22312 bytes
SHA-256: 531de0c8130df16e61fc88bac8377293fab69dee7e27d22932ddc09f3350d7ca
font_01_sfnt_off000060af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AF 19936 bytes
SHA-256: ea759af22d090c98ec9b2735e9990e38e48e197643852080404e6bc21dc44a84

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