Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8275db88f2c26c…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 12:17:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c9455186210aa2dff0afc7e46aff32ab SHA-1: 76fcec6fd3616cb1d04755f88966c424f606e033 SHA-256: ca8275db88f2c26cd29da72d4558d6af04649ee6810c46e7e6c4d7bb11590c83
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains multiple embedded URLs and a prominent external URI pointing to resources related to game hacks and free spins, suggesting a lure for users to download potentially malicious content. The presence of a visual download button and callback lure heuristics further support a phishing or scamming intent. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 https://netcdn.online/app/406889139/coin-master-free-spins-and-coins-game-hack
    • http://libsmpn1balongpo.sch.id//repository/coin-master-com_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/202100-free-spins-coin-master_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/tiktok-free-view-iphone-5c_GM835599320.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-coins-hack_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/roblox-free-hair-codes_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-pc-free_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-custom-minecraft-skins_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-spin-coin-master-game_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-unlimited-spins-apk_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/roblox-pink-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-codes_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-apk-download-for-android_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-unlimited-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/minecraft-free-download-chromebook_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-robux-now_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f98.bin
8083c682e4c5ee2e3cfe2355ec47eddb527b1d45cec7cf7f6f29939b083df24b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F98 24604 bytes
font_01_sfnt_off00008830.bin
a0301b7f2c576e4a889a11eed4f4f7770c47239120b218cd3fd1d2cb36c2aaf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8830 2944 bytes
font_02_sfnt_off00009259.bin
7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9259 18060 bytes

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