PDF malware analysis — malicious · 1dfb1e9dc4efff59

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 20:15:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 53c9e13d475c238c188742c701e78515 SHA-1: 1159748989c6c28f132ab22e889fdd12d21156c0 SHA-256: 1dfb1e9dc4efff59302e5f01328bbae7e46ed95c33a5d23e04621194b2fdb96b

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/what-games-on-roblox-give-you-free-robux-game-hack PDF link annotation
- http://www.businessgalaxy.lk/files/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/free-robux-2021-youtube_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/como-conseguir-diamonds-en-royale-high-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/roblox-free-items-2021_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/cheat-roblox-jailbreak-2021-tp_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/free-robux-earn_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/best-roblox-games-with-free-beatbox_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/free-robux-videos_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/optifine-mcpe_GM479516143.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/hacks-for-roblox-the-mad-murderer_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/roblox-hack-2021-pc_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
- http://www.businessgalaxy.lk/files/files/bux-free-robux_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_off00002fff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FFF	22060 bytes
SHA-256: `dd3d7f34d8959efbaacdda1f3c530843ab40116b3b0bd1a01ec7a5fe0b3c0ea8`
`font_01_sfnt_off000060ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60AB	19916 bytes
SHA-256: `8b19fd13ad5b08f11d9c4597e6f2a0c04d71b28f89248dcac2f5c29d09b121fb`

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