PDF malware analysis — malicious · a48cb8ce5805b658

MALICIOUS

PDF

32.0 KB Created: 2021-07-19 16:49:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 7f26df183850d32f647d2a531aa3119f SHA-1: 3e334f632c96224ea958f82ff8c124cb1c7e65e1 SHA-256: a48cb8ce5805b65888a50cf3780d93b5820c67fcec2d7b99fe5791d26122459b

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 0.9900

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/free-ways-to-get-robux-game-hack PDF link annotation
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
- https://www.e-learning-manberau.com/__statics/gudangsoal/files/minecraft-hack-download_GM479516143.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_off000029c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x29C5	21564 bytes
SHA-256: `c93a3bd65963589588b6b85c77176c2da38c789fa60491fda694186300d1c1ff`
`font_01_sfnt_off0000590b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x590B	18912 bytes
SHA-256: `95e9669b4be8adc23404f7c5686ad6482beb89fc5c96016b9378d0c61fb88bb5`

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