PDF malware analysis — malicious · ca18514f282ef6d3

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 15:11:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: c035ed13dbf8aa54209781ff313971cd SHA-1: cabc656f3fda71a8454a2beff08290bcc30a0783 SHA-256: ca18514f282ef6d3cf0faaf16175c5559ab420f3630449e5752f54ad5845332d

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 0.9983

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/479516143/best-free-minecraft-server-hosting-game-hack PDF link annotation
- https://www.smarthealthme.com/uploaded_files/userfiles/files/free-robux-android-2021_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/pokemon-go-basic-vs-premium_GM1094591345.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-bonus_GM406889139.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/free-executor-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/roblox-bee-swarm-simulator-tabby-bee-cheat_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/free-roblox-bc-card-codes_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/how-to-cheat-in-eviction-notice-roblox_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/free-robux-live-stream-giveaway_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/roblox-free-login_GM431946152.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.smarthealthme.com/uploaded_files/userfiles/files/roblox-mad-city-cheat-codes-website_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_off000032d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32D8	21856 bytes
SHA-256: `d9bafcf5e8f35d55a83d21c26bc91ed0783e1f39c4650ece2cea25c4da7a73b8`
`font_01_sfnt_off00006311.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6311	18328 bytes
SHA-256: `0b2d28431e5234c57104fb234e5f183f246f5a4819408a3d571d7ab08b18c1e5`

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