PDF malware analysis — malicious · f35adbc16d9baa9f

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 00:41:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 184ec29e80be0a026876796958a0ae99 SHA-1: 5f0b2d589c9f5617a901140da6c1b6a308c84e28 SHA-256: f35adbc16d9baa9fb61ba3527c52dd0f353a64e289cb3d06d5d58d2385eb7a89

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/minecraft-bedrock-edition-free-with-java-game-hack PDF link annotation
- http://ellobo.com.ua/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/cheats-max-com-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-trolling-hack_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-item-game-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/www-free-robux-hack-generator-club_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-app-verification_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/raindrop-roblox-exploit-free_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/walking-through-hack-roblox-78_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/robux-come_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/village-coin_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-coins_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/tiktok-free-without-downloading_GM835599320.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-spins-download_GM406889139.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_off000031dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31DD	22560 bytes
SHA-256: `e536d35c64a58c68e106a55c26298e515ffddc1d67659b7af358e3ed66c0a6c5`
`font_01_sfnt_off00006406.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6406	19204 bytes
SHA-256: `90a52e35a77309da72f66e30604d3124f1652836c7ee3d665ece2cb7a8fd5b4e`

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