PDF malware analysis — malicious · 897f85fb750fab42

MALICIOUS

PDF

43.5 KB Created: 2021-05-15 15:03:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 99397a734c62a2b09a048ab52d7f4675 SHA-1: 7ed50f3e3cb60305a7542b30e7bb98d0e2735a78 SHA-256: 897f85fb750fab4253d424555f1aa07dd77f6015e284e5416e063c7d29ff4640

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document's content and heuristics indicate a social engineering attempt to trick users into downloading a payload. The presence of a fake CAPTCHA and embedded URLs strongly suggests a malicious intent to distribute further malware. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a downloader or exploit delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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/406889139/haktuts-coin-master-free-daily-spins-game-hack PDF link annotation
- http://auto-mankel.de/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/hack-download_GM431946152.pdfIn PDF document text
- http://auto-mankel.de/images/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/www-free-robux-com_GM431946152.pdfIn PDF document text
- http://auto-mankel.de/images/roblox-executor-free-download_GM431946152.pdfIn PDF document text
- http://auto-mankel.de/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/2021-coin-master-hack_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- http://auto-mankel.de/images/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/worst-roblox-avatars_GM431946152.pdfIn PDF document text
- http://auto-mankel.de/images/coinmaster-com_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/free-robux-no-download_GM431946152.pdfIn PDF document text
- http://auto-mankel.de/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- http://auto-mankel.de/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
- http://auto-mankel.de/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004b8e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B8E	25572 bytes
SHA-256: `e64156c55ac284b0380bb7dcb7b1c07eec1f77521edc9daebb677dc1e5bd4e38`
`font_01_sfnt_off000086e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86E8	18620 bytes
SHA-256: `ded7de44f7a870837d4ef416985ae0b9ef78dce3540f45b1558d033e63b05ca7`

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