PDF malware analysis — malicious · ee300952e9a80cd7

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 07:33:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 3975004adfa1404f769abd4aff78899f SHA-1: 23fa418775f4569bc7d5249fb3d03925e0f4f7f3 SHA-256: ee300952e9a80cd70c80b30911da689b74f6c1f504e45e6938cfae2eb2b098d3

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/406889139/coin-master-daily-free-spins-2021-game-hack PDF link annotation
- http://www.6636.com.tw/ad6636/upload/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/roblox-hack-website-no-survey_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/roblox-robux-hack-deutsch-pc_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/basic-roblox-hacks_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/hack-roblox-in-game_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/roblox-fly-hack-script-pastebin_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/free-roblox-heads_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/roblox-project-pokemon-how-to-get-mewtwo-cheats_GM431946152.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/mcpe-optifine_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
- http://www.6636.com.tw/ad6636/upload/files/how-to-get-more-robux-for-free_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_002_off00002f24.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2F24	23344 bytes
SHA-256: `32ea05714b544f4591460569931d6407c958873a6f3b2de3a3968fcf00e5def5`
`font_01_sfnt_off000063c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63C9	19000 bytes
SHA-256: `528a935dd58865e4a106a1d117939a17801f064f5f0487dbd1677077be344488`

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