PDF malware analysis — malicious · 68787eca1fe64aab

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 15:47:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9869bda1168a1ab459e83ecef9f2a843 SHA-1: 2e4674f6408b2ecdfd3864077f824166dbe4beb5 SHA-256: 68787eca1fe64aabc243473e1812cca2e9a70f302e475241b0fc02b2a9f2511c

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-robux-apps-that-work-game-hack PDF link annotation
- https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/keisyo-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-flood-escape-2-map-test-infinite-air-hack_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-safe_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-no-pass-requiredfor-pc_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-roblox-cards-2021_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-hack-without-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-cheat-tower-deffense_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/hack-account-roblox-edit-this-cookies-2021_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/hackear-roblox-con-robux-con-fiddelr4_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-jailbreak-hack-no-verification_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_off00002e9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E9F	22496 bytes
SHA-256: `1996de3d783fcf9a248fb34a16330fa9dc672e4b39c023eb72dbb29242767118`
`font_01_sfnt_off000060c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60C7	19528 bytes
SHA-256: `3ce59685ce564c47d51d5d1714b73889d1d344349ceb90d9e3a1730e11095f67`

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