PDF malware analysis — malicious · 08e33cfdb8cab2f4

MALICIOUS

PDF

48.3 KB Created: 2021-06-13 17:36:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 33e53ce358b26c29f7756d636ffc8326 SHA-1: eb1767dca0ce0f1efab87b787693c68229b03c27 SHA-256: 08e33cfdb8cab2f4a01e85d2b43a29c79e9c0fec076f8eb68fd53aa06f0b7c52

122 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 fake-CAPTCHA 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 0.9796

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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.co/app/431946152/roblox-mad-city-cheat-download-game-hack PDF link annotation
- https://sensorcamera-tw.com/upload/files/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/roblox-sexually_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-tiktok-fans_GM835599320.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/cheat-engine-64-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/update-how-to-get-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/comment-hacker-bird-simulator-dans-roblox_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004e74.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E74	28324 bytes
SHA-256: `8465200625a681cb0c027bec0f5818d050411bb887967535b39ab46cb9de6946`
`font_01_sfnt_off00008d35.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D35	2824 bytes
SHA-256: `94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4`
`font_02_sfnt_off000096e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96E3	19284 bytes
SHA-256: `ca698a44f203da80834fc3c1a041036cea14dd6403990c08d07774cc986039ca`

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