PDF malware analysis — malicious · 5004ffeb04f504d0

MALICIOUS

PDF

38.0 KB Created: 2021-06-13 22:33:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 3d96ed460d7e50461f17ecad6937982f SHA-1: 24788df6e844216df5603eb4b2d723d331c49b4d SHA-256: 5004ffeb04f504d0e3dd8de78a377ef081f32e446cdaa782a9d34633b3723ee2

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 0.9991

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 http://netcdn.co/app/431946152/how-do-you-buy-robux-for-free-game-hack PDF link annotation
- http://www.6636.com.tw/ad6636/upload/files/pubg-uc-online_GM1330123889.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/is-pokemon-go-free-on-nintendo-switch_GM1094591345.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/minecraft-clipart-free_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/coin-master-tips_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/roblox-hacks-2021-epic-minigames_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/coin-master-guide-to-free-spins-and-rewards_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_off00004ac9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AC9	25684 bytes
SHA-256: `7844036de721de8cf9165cb91b30553fe3f4d758a00df8308a99fcc247ce8e7c`
`font_01_sfnt_off000085bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85BF	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`

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