Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e9d009c8d890cdc…

MALICIOUS

PDF

45.9 KB Created: 2021-05-16 12:03:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c3720f144ec40decc6f35ffb58eff5d5 SHA-1: 117095011e4e3efc938293a916551c4d0f614d74 SHA-256: 1e9d009c8d890cdc297c8d56241c5d337aa2b561904ea5221f81a25704f27df6
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a document body that explicitly mentions game-related hacks and links. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to direct users to external resources. The primary URL identified is https://netcdn.xyz/app/406889139/link-coin-master-game-hack, which likely serves as a download or redirect point.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/link-coin-master-game-hack
    • https://www.gvandenakker.nl/images/roblox-free-rubox_GM431946152.pdf
    • https://www.gvandenakker.nl/images/roblox-2021-hack_GM431946152.pdf
    • https://www.gvandenakker.nl/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdf
    • https://www.gvandenakker.nl/images/how-to-make-roblox-clothes-for-free_GM431946152.pdf
    • https://www.gvandenakker.nl/images/free-robux-website_GM431946152.pdf
    • https://www.gvandenakker.nl/images/real-minecraft-for-free_GM479516143.pdf
    • https://www.gvandenakker.nl/images/robux-match_GM431946152.pdf
    • https://www.gvandenakker.nl/images/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • https://www.gvandenakker.nl/images/coin-master-free-spins-link-2021-iphone_GM406889139.pdf
    • https://www.gvandenakker.nl/images/hack-coin-master-apk-download_GM406889139.pdf
    • https://www.gvandenakker.nl/images/free-robux-no-downloading-apps_GM431946152.pdf
    • https://www.gvandenakker.nl/images/free-coins-coin-master-blog_GM406889139.pdf
    • https://www.gvandenakker.nl/images/claim-coin-master-free-spins_GM406889139.pdf
    • https://www.gvandenakker.nl/images/coin-master-reward-link_GM406889139.pdf
    • https://www.gvandenakker.nl/images/free-robux-just-enter-username-and-password_GM431946152.pdf
    • https://www.gvandenakker.nl/images/free-robux-only-username_GM431946152.pdf
    • https://www.gvandenakker.nl/images/free-vpn-for-minecraft_GM479516143.pdf
    • https://www.gvandenakker.nl/images/hack-coin-master-link_GM406889139.pdf
    • https://www.gvandenakker.nl/images/how-to-get-free-robux-with-no-verification_GM431946152.pdf
    • https://www.gvandenakker.nl/images/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c28.bin
f1d4fdd9136404fb1d9570f635f4a86e02229cc66919dcdc224d2d97e7672b7e
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C28 24544 bytes
font_01_sfnt_off000084e9.bin
dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x84E9 4020 bytes
font_02_sfnt_off00009271.bin
c6827e16e0be213214ef51fa89eafee05d7599963a4c26d52cf875a9f4fbeadd
pdf-font-stream PDF embedded font (sfnt) at offset 0x9271 17716 bytes