PDF malware analysis — malicious · 9ac30a1387e790c1

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 06:56:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 363c1c1cfe386d98ff14853952a6c91b SHA-1: dd46b5a9b3dab85382b85a0362ac304d61d4826b SHA-256: 9ac30a1387e790c1d59a91cae25ed63cc90b7f0f5bfe1f0127248ae86ac6b5ba

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/how-to-hack-to-get-robux-game-hack PDF link annotation
- https://www.dahu-villa.com.tw/upload/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/are-the-free-robux-fake_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/best-free-roblox-exploit-server-side_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/roblox-pics_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/roblox-aerial-free_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/robux-generator-that-works_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/how-to-hack-roblox-for-robux-201_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/roblox-free-admin-gear-codes_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/free-roblox-gift-card-hack_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/free-twitter-bird-roblox_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/cool-free-green-shirts-roblox_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/how-to-get-robux-on-roblox-hack-no-human-vertification_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/roblox-anti-hack-saving_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/free-robux-generator-no-human-verification-2021-on-pc_GM431946152.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
- https://www.dahu-villa.com.tw/upload/files/mcpe-master-coins-hack-download_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
`font_00_sfnt_off00002f47.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F47	22428 bytes
SHA-256: `bb876f06f56154862a6e32eeb360976584dd12459e003e78ccf72758da866775`
`font_01_sfnt_off0000610d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x610D	18992 bytes
SHA-256: `689b3580a88e4ac2b5c71224fd8e7c25284750e13a7ef80e9d6f951111b623c5`

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