PDF malware analysis — malicious · 41bfd9127a63ba67

MALICIOUS

PDF

34.5 KB Created: 2021-07-09 08:56:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25

MD5: cca499c0a873853db5b57e262ba0f3b2 SHA-1: aa47ed0b19f2cf8e98bf135921f08f1986969d97 SHA-256: 41bfd9127a63ba67f774a3e0829207aec4fa6ff01938437fca2915a18d4d9e7b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary link identified, http://netcdn.tw/app/479516143/minecraft-hacked-client-game-hack, is flagged as a malicious redirector. The document body and heuristics indicate a lure for game-related cheats, likely to deliver a secondary payload or phish for credentials.

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/479516143/minecraft-hacked-client-game-hack In PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-hack-true_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-today_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coins-master-hacks_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/may-11-free-robux_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-build-tools-on-roblox-cheating-2021_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/grandz-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-spins-youthnow_GM406889139.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_off000031ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31CE	22768 bytes
SHA-256: `ee0c391b90e1cb6e29a844a25472518d9c4e7f518400df99a306fef0c423d269`
`font_01_sfnt_off00006446.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6446	18272 bytes
SHA-256: `0fd2c848ddb47650564216b877fc40ab0e75fea84b18b99b3308064a801b9109`

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