PDF malware analysis — malicious · 611a0c882f542adc

MALICIOUS

PDF

45.7 KB Created: 2021-05-14 00:33:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: ed6d93775bfc55d137f3fcbba2e49051 SHA-1: d5b8c6d3549bd61611fe070867df7ebe282b1be9 SHA-256: 611a0c882f542adc0ee41b1bf6dffe3a59185387b0093ce2f942ed9fe25a7d5a

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 0.9432

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.xyz/app/406889139/coin-master-free-cards-and-spin-link-game-hack PDF link annotation
- https://vierabyragazze.com/upload/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/aimbot-download-roblox_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/cheats-coin-master-free_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-minecraft-java-code_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/unlimited-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-official-website_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-rewards_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/easy-coin-master-hack_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-spins-on-coin-master_GM406889139.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_003_off00004bd2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BD2	26172 bytes
SHA-256: `34681708a18729c51e80b01926deccb398e40306c6f967f451b524b8413c3343`
`font_01_sfnt_off000086b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86B4	2824 bytes
SHA-256: `381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5`
`font_02_sfnt_off00009057.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9057	18228 bytes
SHA-256: `e7a46ecd3c3d6b5b9fab8b48fe890140ab6e75c9a4df77531e3aad29f6ea7524`

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