PDF malware analysis — malicious · dc5439433d33d9c6

MALICIOUS

PDF

36.7 KB Created: 2021-07-03 19:59:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 2a109e0161d3ec2ab9c4e8bf6a37b7ed SHA-1: 8089488c17ac67c9b82f35a9cdfae58ef2e0db43 SHA-256: dc5439433d33d9c6b92a5b59a3f171c84964d01ca980c06b8cc0aedbec4d7389

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 0.9980

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/406889139/coin-master-hack-activegamer-game-hack PDF link annotation
- https://balibanknews.com/new/public/ckfinder/userfiles/files/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-tix-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/hack-for-champion-simulator-roblox-pastebin_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/mcpe-optifine_GM479516143.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-free-auto-clicker_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/site-robux-free_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/robux-generator-com_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/master-hack-coin_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-robux-working_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/hack-roblox-pc-sur-jailbreak_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/how-to-make-roblox-shirts-for-free_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_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
`font_00_sfnt_off000039f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x39F0	22728 bytes
SHA-256: `f4ab40c793164b699d663518f9fe0401f4d64b6de7d490e49325b5b4f1b5e307`
`font_01_sfnt_off00006c9a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C9A	18376 bytes
SHA-256: `9071112516a3c1a751db78ff2cf185d6a5c8a1d73babf85370e027775254c109`

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