PDF malware analysis — malicious · 8922a83d3f95db57

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 03:29:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: f05b5136d537d9ee5f5f32fb1a2fb46a SHA-1: 833e0a5065b083ac3ee11a50543d3c61bf423e20 SHA-256: 8922a83d3f95db576111d7d128385b335b4ae6487c85654cb97adbb3cb446f89

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a visual call-to-action, luring users with promises of game hacks and free items for popular games like Roblox. The primary link, http://netcdn.co/app/431946152/roblox-free-items-2021-october-game-hack, is likely a redirector to a malicious site or a download of further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack.

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/roblox-free-items-2021-october-game-hack PDF link annotation
- https://www.hearcolors.com.mx/img/blog/files/robux-fun-hack_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/hack-avatar_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-youtube_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-make-roblox-not-detect-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-quiz_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-models-on-roblox-are-giving-viruses_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-speeed-hack_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/buy-delta-lite-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-free-admin-house_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/kachifpro_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-no-survey-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-hack-generator_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_off00002f83.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F83	22708 bytes
SHA-256: `8d90cbe889065a6532ec32f923391869bc15639281a5b6d8a3c7ab20554681ff`
`font_01_sfnt_off00006277.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6277	19416 bytes
SHA-256: `641e5d6e2fcfcd5f8a4f5ecd53297f63ad5de83e8cc715fdee79049a1cc66abc`

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