PDF malware analysis — malicious · ea87fcb079915928

MALICIOUS

PDF

44.9 KB Created: 2021-05-12 20:34:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 798e0d4247a555c50e497e3e9f219bdf SHA-1: d6d3f16047bc595d91c3d5fe1a7d516861d1f745 SHA-256: ea87fcb07991592821ad4782af0cf88e8744eb4ec16c0fd61f4e5a5051c304e4

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains lures related to 'Free Robux' and 'game hacks', directing users to external URLs. The presence of PDF_GAME_HACK_REDIRECT_LURE and ML_NYX_PDF_MALICIOUS heuristics strongly indicates malicious intent. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of compromise, likely leading to further malware downloads or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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/431946152/free-robux-download-game-hack PDF link annotation
- http://lestnicamoskva.ru/images/free-coin_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/minecraft-116-1-download_GM479516143.pdfIn PDF document text
- http://lestnicamoskva.ru/images/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
- http://lestnicamoskva.ru/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/rbx-roblox_GM431946152.pdfIn PDF document text
- http://lestnicamoskva.ru/images/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
- http://lestnicamoskva.ru/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
- http://lestnicamoskva.ru/images/wurst-hacks_GM479516143.pdfIn PDF document text
- http://lestnicamoskva.ru/images/fb-coin-master_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/master-coin-free-link_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
- http://lestnicamoskva.ru/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://lestnicamoskva.ru/images/coin-master-hack-safe_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- http://lestnicamoskva.ru/images/how-to-hack-peoples-roblox-accounts_GM431946152.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_off0000437c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x437C	25940 bytes
SHA-256: `ea628ab99448066c6faad7e93c53b861e6322bc940222df9cf93bb4f0a98ea68`
`font_01_sfnt_off00007e6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E6D	5596 bytes
SHA-256: `9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5`
`font_02_sfnt_off00008b15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B15	18824 bytes
SHA-256: `8406cb1c38774726d91b6a9fb5333918f35ff34bd7dcb56cd5a50b6af28a82ee`

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