PDF malware analysis — malicious · b6ad33915e6ccb2f

MALICIOUS

PDF

47.3 KB Created: 2021-05-15 03:16:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: a393cfd8c1b313e7c5ff97e384031a57 SHA-1: 0b9839115993f49bd6b87deea412b00ea27b9df4 SHA-256: b6ad33915e6ccb2f129df6004c5e36853602b8ce9ec80dcf9773bfe63ad3e970

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, a common social engineering tactic to trick users into interacting with malicious content. It also embeds an external URI pointing to a URL that promises free outfits on Roblox, likely a pretext for downloading a payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/how-to-get-free-outfits-on-roblox-game-hack PDF link annotation
- https://www.ferienhausdirektkroatien.de/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/coin-master-cards-free_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/free-robux-clothes_GM431946152.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/real-roblox_GM431946152.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/free-robux-gen_GM431946152.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.ferienhausdirektkroatien.de/images/coin-master-hack-version-2021-free-download_GM406889139.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.

Filename	Kind	Source	Size
`stream_003_off00004c85.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C85	26756 bytes
SHA-256: `9d0981397697d757db9cb43ed26b57a18334f89ebb08c3ad7f499276af321ba4`
`font_01_sfnt_off00008ae5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AE5	3400 bytes
SHA-256: `4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07`
`font_02_sfnt_off0000960f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x960F	18476 bytes
SHA-256: `4c550287b1f7582f932e33e2a3ce93633f0afb7f6cd43646c0383227d45fb2b9`

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