Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e9601d444d90e4…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 13:36:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 28a6b189f10a58086e794a20ae84f584 SHA-1: 211f8b4a6fa7cd07e53a8b8cb9904fd8a1269d01 SHA-256: a7e9601d444d90e491cdb295cbfa82e1f37824b6cf90fb7fe1d356a0035b3d25
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/free-robux-hack-trackid-sp-006-game-hack PDF link annotation
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-hack-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/robux-match_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-roblox-to-get-admin_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/galaxy-roblox-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/eupo-fun-roblox-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-https-coinms-net_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_off00002f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F16 22228 bytes
SHA-256: 509a9409e2a63ded54a9354614d78a7b141d1f056df3f91edae4a304f6d18f13
font_01_sfnt_off0000605e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605E 19728 bytes
SHA-256: 1b6e7b72b76e6b3eafcbe04021c625b16daf1e537e610f0f5ea9801718eef218

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