PDF malware analysis — malicious · aa6ba6fdd8d41a89

MALICIOUS

PDF

41.9 KB Created: 2021-05-11 06:41:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: a2585f01efec51354f132762fa3b5f24 SHA-1: 10bce0b626e24c5642a51a002f7d9ebd2f610ab6 SHA-256: aa6ba6fdd8d41a891e338c72614881f36e06f5573229f492ac489d532cb60f92

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a remote-support 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 0.9971

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.
Remote-support tool lure high SE_REMOTE_SUPPORT_LURE

Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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/479516143/minecraft-survival-free-game-hack PDF link annotation
- https://www.eisgroupme.com/uploaded_files/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/what-games-give-you-robux_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/rbxdemon_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
- https://www.eisgroupme.com/uploaded_files/userfiles/files/add-robux_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
`stream_003_off00004b21.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B21	24484 bytes
SHA-256: `5f3f0af0d35cdb0e46017792220e3917c3039d584dbf8b33520d6c7014ecb5f0`
`font_01_sfnt_off0000829d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x829D	17896 bytes
SHA-256: `ae22d75e7686c6a225539c41209adbc632e29a8ac914593cbcf88605996e660b`

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