PDF malware analysis — malicious · 1d8f275689010a72

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 12:00:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f45b7d235a0db4f8d7b1c650adb5c4f8 SHA-1: 6e03068ff6557da92fa4464ad79873b54eda628a SHA-256: 1d8f275689010a72db54e20df8183394a6978bdcc3ebceb6107be66dec6ea88d

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/406889139/coin-master-free-spins-cheat-game-hack PDF link annotation
- https://goodtools.tw/upload/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-hack-roblox-game-apocalypse-rising_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/robux-without-verification_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/ninja-zone-roblox-cheats_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-food_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-hack-just-username_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-please_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/no-human-verification-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/pubg-uc-4all-cool_GM1330123889.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-hack-review_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/earn-free-robux-right-now_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_off00002fba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FBA	22712 bytes
SHA-256: `101e289be97b00c8e61d4ec0b36494fef63320f776e87ad3c2f3a5092d9bac5e`
`font_01_sfnt_off0000629b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x629B	18340 bytes
SHA-256: `31b040f11d31e2c25a3918167828aea55bdad87c8eae0a9348126ed232a1d2b9`

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