PDF malware analysis — malicious · 62215cec520df0ff

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 23:29:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: e3bd505a5a108818b2c4ca1478ee2608 SHA-1: aa478304a2ed4c3cf5c0106f9d770baaf303c214 SHA-256: 62215cec520df0ff65689b99c03b245e9fad06fc36aa51f5d380af88fe5d7087

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 0.9980

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 http://netcdn.tw/app/431946152/free-roblox-characters-game-hack PDF link annotation
- https://www.tw-storage.com.tw/upload/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-roblox-usernames-and-passwords-with-robux_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-script-hack_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/hack-script-roblox_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-card-hack-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/9-legit-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-geld-hack_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/ery-promo-codes-for-robox-free-robuxs_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/project-alpha-5-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-hack-roblox-on-ipad-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/minecraft-images-free_GM479516143.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-grinding-cheat_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/hack-any-tycoon-roblox_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/can-you-get-minecraft-for-free-on-pc_GM479516143.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
`font_00_sfnt_off000030f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30F1	22336 bytes
SHA-256: `fb97ee1291025596a20bf46771f6bfcb3144cdc19d74fefcae3e4f04e0e7c5cf`
`font_01_sfnt_off00006295.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6295	18920 bytes
SHA-256: `f5e38632de1cb8bfdf796bc872df6d19c2691b2634d989ea191675e2d28a5d2f`

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