PDF malware analysis — malicious · a14ed80446d6f7b9

MALICIOUS

PDF

44.9 KB Created: 2021-06-07 20:38:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 37992047aafec47245b460d6fb72c4f2 SHA-1: de1f02d9a61464a3fbee5efb255ce910c66bf78b SHA-256: a14ed80446d6f7b9b7d9d7985d096545bc4e70ffdfe4e53411d9d97d150ec2dc

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 0.9865

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 https://netcdn.tw/app/431946152/free-money-in-vehicle-simulator-roblox-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coinmaster-twitter_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/spins-coin-master_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-online-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-pe-free-download-ios_GM479516143.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
`stream_004_off00005001.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5001	24968 bytes
SHA-256: `0c07a1e35f5b5289b250162daf881aaa267afa1debd4945dc957adda44a3abe6`
`font_01_sfnt_off00008996.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8996	19476 bytes
SHA-256: `7c8a85a8c935ed23303c50510a21bd28f155e4e7e5c8aff0826150050b6a5fa4`

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