PDF malware analysis — malicious · cc4d3b8fa3a0f0fe

MALICIOUS

PDF

32.2 KB Created: 2021-07-20 01:12:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 00c417dc4ce07535ff097dbf3abae5e4 SHA-1: adffd3fbfd11d7bbd3143a746806934a76062787 SHA-256: cc4d3b8fa3a0f0fe67660df4497cbb9df75ba66b196172337d5beabe1b1cc259

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a "free generator / game hack" for Minecraft. The document body and heuristics indicate a lure to trick users into clicking these links, which likely serve as a gateway to download further malicious payloads or conduct phishing. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious redirection workflow.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

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/479516143/minecraft-free-ios-game-hack In PDF document text
- https://admin.9credit.vn/data/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
- https://admin.9credit.vn/data/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
- https://admin.9credit.vn/data/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
- https://admin.9credit.vn/data/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://admin.9credit.vn/data/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
- https://admin.9credit.vn/data/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://admin.9credit.vn/data/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
- https://admin.9credit.vn/data/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://admin.9credit.vn/data/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
- https://admin.9credit.vn/data/files/can-you-get-minecraft-for-free_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_off00002bd7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BD7	22392 bytes
SHA-256: `f8b6c6515c0d67a2ab5fec758e827bcd4dc414428ffae91b5dd596959140dbd5`
`font_01_sfnt_off00005dbc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DBC	17712 bytes
SHA-256: `54d91aee1a0896e30cfb652b9b9fc91e7951cfaa65da7a48657c461bc2dd637d`

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