PDF malware analysis — malicious · c4e60d4a670df825

MALICIOUS

PDF

45.0 KB Created: 2021-05-13 19:00:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 451d4cba275b1dd7ad1d81fa975ce52d SHA-1: 41c0c7b1e1bc093d29dc43f003b5284c3daffd25 SHA-256: c4e60d4a670df8254042dbccfbd7e742315b0d56e54780937a31e3a7b8b6dcf4

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 0.9632

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/479516143/minecraft-pocket-apk-game-hack PDF link annotation
- https://vierabyragazze.com/upload/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-roblox-generator_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-website_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-free_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-money-hack_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-2021_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/unlimited-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/robux-in_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-place_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_off00004ca8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CA8	24600 bytes
SHA-256: `a2d41d1786207c5a95fc0d588f95f49555f897e1e13ec1837f82b13c1e3603b9`
`font_01_sfnt_off00008409.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8409	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008dba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DBA	18208 bytes
SHA-256: `43fabaa7baa2069dea089d396f6a12271a87df7a231cffc83c7f5458ac3d8eee`

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