PDF malware analysis — malicious · 0a6f844329ad9c54

MALICIOUS

PDF

47.7 KB Created: 2021-06-10 21:31:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d5b18ffbc5adc99cd4c0128e6e02caea SHA-1: be08d7fdd3aad210e610e41f057bebebc3641c7e SHA-256: 0a6f844329ad9c546940ec69fe317ae21de86f0be340c311f98595db9193fe82

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt to trick users into interacting with malicious links. The primary external URI, https://netcdn.tw/app/431946152/get-free-robux-on-phone-game-hack, is likely a lure for a secondary payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

Heuristics 4

Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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.tw/app/431946152/get-free-robux-on-phone-game-hack
- http://lib-smansumsel.sch.id/repository/master-free-spin-and-coin-links-html-m-1_GM406889139.pdf
- http://lib-smansumsel.sch.id/repository/how-to-get-free-roblox-items_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdf
- http://lib-smansumsel.sch.id/repository/hack-my-game-xyz-coin-master_GM406889139.pdf
- http://lib-smansumsel.sch.id/repository/roblox-free-robux-just-give-me-your-password_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-legit_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
- http://lib-smansumsel.sch.id/repository/bux-free-robux_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/free-spins-coin-master-2021_GM406889139.pdf
- http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/without-pokemon-go-free-evolve-after-trade_GM1094591345.pdf
- http://lib-smansumsel.sch.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/coin-master-free-spins-coins_GM406889139.pdf
- http://lib-smansumsel.sch.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/free-robux-survey_GM431946152.pdf
- http://lib-smansumsel.sch.id/repository/coin-master-400-spin-link-hack_GM406889139.pdf
- http://lib-smansumsel.sch.id/repository/free-spins_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005035.bin` `7faabb4e3704ae68282e2f27e12fd3598ed2f73cd36bfe701eca114d5d1c4312`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5035	26224 bytes
`font_01_sfnt_off00008cf2.bin` `0eac32074ede5a7137204e636ea7e2fd9426c3d3d5e7ff020b1898996628efce`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CF2	3012 bytes
`font_02_sfnt_off00009768.bin` `97ce6d65c456df1a77223394c777300713061609f978a06573aae532569ba676`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9768	18440 bytes

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