PDF malware analysis — malicious · 8ec5e2a0df58c79f

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 10:37:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 8a87bd3b9e9c90512b6d9ea8e43d3b9a SHA-1: aa0c47a04df6254da953a28a34f0b28b4a140576 SHA-256: 8ec5e2a0df58c79f6c68c6279dddc1bb51a0f6f5d0b5283fda6de1b4860b1683

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/431946152/get-me-free-robux-game-hack PDF link annotation
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-face-roblox_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/daily-free-spins_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/pokemon-go-free-promo-codes-march-2021_GM1094591345.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-generator-com_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-fun-com-free-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
`font_00_sfnt_off00002ff5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF5	22232 bytes
SHA-256: `a7994e3e953514e593145b2b253d2aff63edf1c5f5bf33b0424d5d2aa2438086`
`font_01_sfnt_off000061b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61B2	19016 bytes
SHA-256: `347cbacabdd051a32e8ff1370d494dce2d8b96fd8278a713b029cdf2c24af4e4`

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