PDF malware analysis — malicious · 87c046d449b3b0f0

MALICIOUS

PDF

35.8 KB Created: 2021-07-09 12:25:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: c3106e8579067b80e0876414e4a20354 SHA-1: cc20884c8367660571ec55f0526ffccfccddfbc8 SHA-256: 87c046d449b3b0f0330205d33bb49cfb2cb4bf4d020da94c4ebc8b75b654a08d

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-free-download-game-hack PDF link annotation
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-legeal-robux_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/what-tiktok-free-fans_GM835599320.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/roblox-bloxburg-free-to-play_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/cheat-engine-63-roblox-tycoon-hacks_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/roblox-sonar-studios-dragon-adventures-cheats_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-roblox-account-getter_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/can-you-earn-robux_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/hack-roblox-free-robux-pastebin-com_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-roblox-promo-codes-for-robux-2021_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-robux-irobuxcom_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_off0000330e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x330E	23512 bytes
SHA-256: `85d761efd9bc203c823cceab6310acc385d402105fb7a3e48ef7a476a423b315`
`font_01_sfnt_off0000687a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x687A	18576 bytes
SHA-256: `bef73bb03a8c286d7dc28121775b83a402668363f72ff2f39909fc8ac62c57e0`

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