Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbc469a1b72de6d…

MALICIOUS

PDF

45.7 KB Created: 2021-05-10 17:10:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9c2ca6619487330f5eed95f910e81441 SHA-1: 93f552dea848ff080b7e3cb441e0dbfa53bed6e3 SHA-256: adbc469a1b72de6d77ec08cb03cdb6bf48f772f346dbf3b15bd158304e87101e
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that explicitly mentions "free spins" and "hacks" for popular games. The primary URL, https://netcdn.xyz/app/406889139/free-spins-coin-master-links-thursday-november-28-2021-game-hack, is likely a lure for phishing or malware distribution. The presence of a visual download button lure and a callback lure further supports a malicious intent, likely related to scams or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/free-spins-coin-master-links-thursday-november-28-2021-game-hack PDF link annotation
    • http://opac.acehresearch.org/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/no-robux_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B9 25356 bytes
SHA-256: 294d61e1ca1d7436aa6661144a8a60bca1f458564b06c2fdf9915bc6a79edf00
font_01_sfnt_off000080f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 3000 bytes
SHA-256: 56ee3cf210babcab1d595ec3cc7d666f7a646b8ea00ab1e6563ebd84f84582f8
font_02_sfnt_off00008b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B50 19860 bytes
SHA-256: d63300f936d8bb545b77e0b0c2e21733cc6fa46b1c79ade6db784861823ff386

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