PDF malware analysis — malicious · 38987d29db3f6cc0

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 01:56:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 5acf29f24fc228deb15479a212d641e9 SHA-1: 20d7af821d4082655ee2d4955267d0129ca43ef4 SHA-256: 38987d29db3f6cc05f49fefed94bd4fb6f55090466b1cd2d00abb79ba2e1dc29

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/479516143/get-minecraft-windows-10-free-game-hack PDF link annotation
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-hack-money-script_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-robux-generator_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/free-printable-roblox-birthday_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/cool-free-roblox-outfit-2021_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/how-to-ban-people-on-roblox-without-cheat-engine-commands_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/funny-roblox-avtar-free_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-hack-website-easy_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-download_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-hack-for-robux-with-out-a-veafication_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/cheat-to-have-highest-rank-roblox_GM431946152.pdfIn PDF document text
- https://www.extrifit.com/uploads/ckfinder/userfiles/files/roblox-mad-city-free-vip-servers-2021_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_off0000334b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x334B	21444 bytes
SHA-256: `f363f375ec2983b5216a8a98bc5f31a0739c83af0b166b48301322ea2ba6110a`
`font_01_sfnt_off0000622b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x622B	18812 bytes
SHA-256: `611e0fe8ef0e09460557208b470d6bb305c401f6b817a80b09e66ff1eb668ddb`

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