PDF malware analysis — malicious · 6e592e296baf405e

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 17:51:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 7b5bf249bd8c5158eb65a784d0f5b9b8 SHA-1: f435948df478c7410dceba58655863730d058a93 SHA-256: 6e592e296baf405edbd42c664774133b23b0c4c1b4cda2a3627196ff559abe85

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games like Roblox. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links confirms a pattern of luring users to potentially harmful sites. No scripts were extracted, but the document's primary function appears to be social engineering via a lure.

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.tw/app/431946152/roblox-robux-generator-game-hack In PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/hacks-tool-roblox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/free-roblox-supream-pants_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/tiktok-for-free_GM835599320.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/funny-hack-scripts-roblox-pastebin_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/el-mejor-video-de-hack-robux-gratis_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/free-builder-member-in-roblox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/comandos-de-hacks-para-roblox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/how-to-be-a-cheater-in-roblox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/how-to-hack-people-robux_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/coin-monster_GM406889139.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/rewards-roblox-com_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_off00003139.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3139	22228 bytes
SHA-256: `a0831c88ceae4866d4470ec4bf7900b8cb83c4ff2b74d88a5b914f1b2fb2b708`
`font_01_sfnt_off000062cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62CC	18728 bytes
SHA-256: `787ffc0141419081af677b20e4d0e419e4bbb483b05840f2e673f9ef6eccfe79`

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