PDF malware analysis — malicious · 3b0bc09e34eb1fc7

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 10:20:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 012408950d5a18c7aaee7e96b4de22a0 SHA-1: e51bc610def9194b01fa5a391ba8cf08bd3ba721 SHA-256: 3b0bc09e34eb1fc7834539ab6a66d097d6942c8c52e162a453feebd6d873ce4d

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/406889139/cheat-codes-for-coin-master-game-hack PDF link annotation
- https://www.toyogas.com.tw/upload/files/how-to-pubg-uc_GM1330123889.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/static-moonactive_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-roblox-mobile-app_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-world-zero-hack_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-roblox-login-password_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/www-play-roblox-for-free-com_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-rainbow-knife-roblox_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-just-sign-in_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-hack-a-group-on-roblox_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/is-free-robux-possible_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_off0000307a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x307A	23344 bytes
SHA-256: `2565bab3574a0e4f127bc299ab872cab5d03c1fbfbfd97908142e29d4ff1cd3a`
`font_01_sfnt_off00006530.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6530	18336 bytes
SHA-256: `46a5dce1bcd15fef46771321b75302700fdbe642ab852c79c7094750b70fcfec`

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