PDF malware analysis — malicious · 4493a6b5f9dd067f

MALICIOUS

PDF

48.0 KB Created: 2021-05-14 12:56:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 23341b43546864e7abcc00f105577949 SHA-1: 6dcb088b55d1a3bf6a028d58056be7c45f6dce00 SHA-256: 4493a6b5f9dd067fc0661d765a72c229bd20ffcedc297d8eb5c41b59e350ddba

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9013

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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/479516143/minecraft-dungeons-free-game-hack PDF link annotation
- http://sfera-express.ru/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
- http://sfera-express.ru/images/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
- http://sfera-express.ru/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
- http://sfera-express.ru/images/free-robux-com_GM431946152.pdfIn PDF document text
- http://sfera-express.ru/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://sfera-express.ru/images/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
- http://sfera-express.ru/images/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
- http://sfera-express.ru/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
- http://sfera-express.ru/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- http://sfera-express.ru/images/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/coin-master-blogspot_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
- http://sfera-express.ru/images/free-minecraft-texture-packs_GM479516143.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_off00004d31.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D31	29384 bytes
SHA-256: `1229aa3dc10732ad43bddca4b29062cde3cd7ad451a27831ab1a1af565498b87`
`font_01_sfnt_off00008f8d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F8D	2824 bytes
SHA-256: `61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b`
`font_02_sfnt_off00009933.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9933	18304 bytes
SHA-256: `f6a577bc3f56294164eedaca4aa626844c61f0adb940d643d6f78e4abd993284`

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