PDF malware analysis — malicious · 7d2101588172ff37

MALICIOUS

PDF

33.2 KB Created: 2021-06-28 03:33:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: e40f5306d2bc1fca2cb61fe4cc4547ea SHA-1: 0a0f24c0395acada5535dfd97eef78b998953803 SHA-256: 7d2101588172ff37e47161f6a2fc52e6fcc3ab70b1ca6e640acd9743a2521ae9

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.co/app/431946152/keisyo-free-robux-game-hack PDF link annotation
- https://www.tiancom.com.tw/upload/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/op-rewards-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-free-hair-generator_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/robuxian-com-free-robux-code_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-bleach-shikai-hack-script_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/pokemon-go-windows-free-download_GM1094591345.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-secret_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-place_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
- https://www.tiancom.com.tw/upload/files/robux-hack-dowbload_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
`font_00_sfnt_off00002c5b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2C5B	21852 bytes
SHA-256: `88c73e9fb71694b28bb1bf8586e29073fc10bfef90ceb0b3303a6d8c2ae44602`
`font_01_sfnt_off00005c87.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C87	19016 bytes
SHA-256: `bef8932e3e7d981980e8c421186158aac6840fcd8077ab77f690a06b04785157`

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