PDF malware analysis — malicious · 98b5683e5cf32222

MALICIOUS

PDF

42.0 KB Created: 2021-05-19 06:32:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: d95ef8870d5d9f04c4f47759c9e4a6a5 SHA-1: 88a27bf0cc8bc8f70960906ba4a4798e8088deea SHA-256: 98b5683e5cf322221e7ac7c2929cfb6c33ebccf3aa7f3617827cc6cbe0976606

74 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 3

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.
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 https://netcdn.xyz/app/431946152/free-robux-no-human-verification-no-survey-game-hack PDF link annotation
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/roblox-comroblox_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/get-free-coin-master_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/i-need-robux_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/spins-coin-master_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
`stream_003_off00004b2e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B2E	25188 bytes
SHA-256: `587afbcef9006ebad3e958076ecdb0b80a07b0c02497603b5981116a63c54e25`
`font_01_sfnt_off00008442.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8442	19156 bytes
SHA-256: `339d1e55aee7c6169fc9e26e1541ea9d6c779f781f53a8c1d652dbe4fbeac478`

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