PDF malware analysis — malicious · a35d27b623e1c87b

MALICIOUS

PDF

40.7 KB Created: 2021-05-19 20:55:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 9fbf9c617ca36a9b61eb2f9aa8b3bc0e SHA-1: d6f88a605e46993562c26d09df203ab4a7464dfa SHA-256: a35d27b623e1c87b9de6fc03222940d46be1f381b11c49248c0be07948fb2c03

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 0.9971

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/1094591345/pokemon-go-free-pokemon-game-hack PDF link annotation
- http://acquacleanpiscinas.com.br/images/ckfinder/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/unlimited-robux-2021_GM431946152.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/coin-master-free-online_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/free-robux-site_GM431946152.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/freerobux-hack-us_GM431946152.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/free-robux-2021_GM431946152.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
- http://acquacleanpiscinas.com.br/images/ckfinder/files/get-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
`stream_003_off0000477a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x477A	24184 bytes
SHA-256: `f366302212ca40075a27ddbc2580c0300231d6c68063576296483fc71f142d8f`
`font_01_sfnt_off00007e6e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E6E	17844 bytes
SHA-256: `a557d681b6930e6b67474f1caccc94bc7d6b750dd896a5f6664ca8e84191490a`

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