PDF malware analysis — malicious · aac428a8be90fc5b

MALICIOUS

PDF

34.2 KB Created: 2021-07-08 00:17:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: e0eb188ae894b5a4173c629c37dd2f75 SHA-1: dccd8074197a1cf44350a426680e0d0a48eac609 SHA-256: aac428a8be90fc5b36e2ad21768c465c2d07e33e06f34c338caf81d9fe7ee514

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/roblox-hack-scripts-pastebin-game-hack PDF link annotation
- https://key8013805.com.tw/upload/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/cute-things-to-wear-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-robux-no-rewards_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/www-robux-us_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/customize-v4-roblox-hack_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/i-want-robux_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-robux-generator_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/10000-robux-free_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-robux-generator-no-ads-or-surveys_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/lila-plays-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-robux-place_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-admin-roblox-codes_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/how-to-free-robux_GM431946152.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_off00002f9a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F9A	21920 bytes
SHA-256: `af800083fcba6580ca535e5ae7324f5ed84b7e10e481879359f2795b06e4ac28`
`font_01_sfnt_off00006000.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6000	19212 bytes
SHA-256: `46b8535cd4ab0c6c32fa43c13492b1dbcacac03349de8f770ca192070773bb97`

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