PDF malware analysis — malicious · eda71b571ee6e2a4

MALICIOUS

PDF

46.0 KB Created: 2021-05-11 18:34:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: e7781aeb8f111f5a96aab4268550024a SHA-1: 00b32429d9711c181832d367a69601814419e104 SHA-256: eda71b571ee6e2a4bfce21ad4d2372c859b84261168bbc736f214a7a7bb3ca7e

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 0.9432

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 https://netcdn.xyz/app/431946152/free-robux-no-downloading-apps-game-hack PDF link annotation
- http://himalayandiscoverytrek.com/userfiles/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/download-hack-coin-master_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/roblox-free-download_GM431946152.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
- http://himalayandiscoverytrek.com/userfiles/files/how-you-get-robux_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off0000488b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x488B	25268 bytes
SHA-256: `00556ea895e6355b96c7ec3325f17af2ae797ef3b21f669adc245bda55a4e77c`
`font_01_sfnt_off00008333.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8333	3112 bytes
SHA-256: `471f662098e83c5562504503f5e7603b336ca0957605358090bb98e15c7aed80`
`font_02_sfnt_off00008dec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DEC	19404 bytes
SHA-256: `49b6dfa9b56ae39db803e39cb2f1ecc2093e69bc279e239e32c5359198169209`

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