Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af4a53d319cec92…

MALICIOUS

PDF

43.5 KB Created: 2021-05-18 00:09:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6277c8d8692524c948f5d48b3100e715 SHA-1: 69c9e7422c7e96bcf6d6bc19ad23bf8cb4e82b84 SHA-256: 9af4a53d319cec92e1488a62e07e831ee205631ce3ad5b0fe8f1381353be0512
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a lure to download external content. The ML classifier also flagged this PDF as malicious with high confidence. The document body and extracted URLs indicate a theme of obtaining free in-game currency or hacks, which is a common phishing and malware distribution tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/406889139/mcpe-master-free-coins-game-hack
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/minecraft-esp_GM479516143.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/spin-free-coin-master_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-gifts-coin-master_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-get-free-roblox_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-hacks-iphone_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/hack-coin-master-xyz_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-pc-hack-tool_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-spins-on-coin-master_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/minecraft-free-download-unblocked_GM479516143.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-2021-free-spins_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-cards-link_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-hack-quora_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-robux-generator-no-verification_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/websites-to-get-free-robux_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-robux-card-codes_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/daily-free-spin-link-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004fdb.bin
6279c17532bc2e859c4b2a6b6620601111ab191f9d32fa4aae1b48e60199c3e3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FDB 25200 bytes
font_01_sfnt_off0000891e.bin
fd2a9b542b9a3d572ceee6699cc4c399244e1fd7dbef152df6eaecf08c997c61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x891E 17884 bytes

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