PDF malware analysis — malicious · 595ec8754342c4b4

MALICIOUS

PDF

34.6 KB Created: 2021-06-22 05:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: af7223e6b6bb9535518943aebd41d12f SHA-1: 50dc3c02bac88f7283e9ef391c07ffb33bd09311 SHA-256: 595ec8754342c4b45a20e3dac27511d2c0e4afb2f1c34d696b151f41be3b52ee

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.co/app/406889139/fb-coin-master-game-hack PDF link annotation
- https://www.bridalguide.com/sites/default/files/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/free-robux-on-ipad-pro_GM431946152.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
- https://www.bridalguide.com/sites/default/files/files/coin-master-free-coin-hack_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_002_off000030b2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x30B2	23196 bytes
SHA-256: `1bb5da73943053ce5bd4d58eeaffc5b3b5468ef94540c8be15ad7eba2205b99b`
`font_01_sfnt_off0000651a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x651A	18156 bytes
SHA-256: `7a3cd79ff080fa27ccf3189e4d913bb82dfe371fff983502a27164cba1261ff5`

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