PDF malware analysis — malicious · 915f91d3941ee21d

MALICIOUS

PDF

32.8 KB Created: 2021-07-09 17:13:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 5807da5c622bec8a00ecd9c7b5e18870 SHA-1: 0eeb293355659e1e6ccf4739495623f3be43c627 SHA-256: 915f91d3941ee21dc532bcb74d9f6adb739aefecb9a02e29bc08145ca27b3bcf

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting free generators and game hacks for popular games like Roblox and Minecraft. The primary lure URL is http://netcdn.tw/app/431946152/free-roblox-script-executor-game-hack. This indicates a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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/free-roblox-script-executor-game-hack In PDF document text
- http://wwic.wales/uploads/files/files/drawing-tablet-for-roblox-free-draw_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/free-robux-legit_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/roblox-launcher-free-download_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/hack-roblox-co-no-verification_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/roblox-welcome-to-bloxburg-hack_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/cheat-engine-64-roblox-noclip_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/how-to-get-free-jailbreak-money-roblox_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/master-coin-free-link_GM406889139.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/how-to-get-robux-for-free-2021-no-human-verification_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
- http://wwic.wales/uploads/files/files/blox-fish-free-robux_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_off00002a6c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2A6C	21964 bytes
SHA-256: `be3e63fe8e0e703d86b4fd9d5fd51adde6d494051121abe092f80ef721b6b103`
`font_01_sfnt_off00005b23.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B23	19192 bytes
SHA-256: `0ba7e7d5fd8df798e70dfad4e7f149b03f2bd1e3103381c6ab8af076a8db2d07`

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