PDF malware analysis — malicious · b910716cad69263f

MALICIOUS

PDF

35.7 KB Created: 2021-06-29 10:55:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: e2eb22817ab782b3289a7d44138d413f SHA-1: c8ccf090859eba00bbed22304f279572c58333a4 SHA-256: b910716cad69263fc35f28948f8e8d28393cd1d099dd8c6546c1817389bdab88

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks and generators for popular games like Roblox. The ML classifier strongly indicated maliciousness, and the document body reinforces the lure by mentioning game hacks and generators. The primary attack pattern involves tricking the user into clicking a link that leads to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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/how-to-join-me-free-builder-club-in-roblox-game-hack In PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/free-exploits-website-downloads-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-hack-2021-generator_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-robux-hack-online-2021_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/cheat-codes-for-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/free-code-for-roblox-december-2021-unicorn_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-lvl-hack-in-naruto-final-bond-in-roblox_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/pubg-uc-earning-app-2021_GM1330123889.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
- https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-working_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_off00003268.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3268	22920 bytes
SHA-256: `b2a5c6d4110e3813d35c0aa4f163f4b77eccd8761568db40c4a69b3bf833f971`
`font_01_sfnt_off000064e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64E8	19612 bytes
SHA-256: `d62e70425220f34ad19acb512975717d803d095e98ed6c91161891307e8f9d96`

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