PDF malware analysis — malicious · bdf7a6ca8f92a869

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 15:38:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 0a0b5bf54e7973b4eea543eaf7d7f99f SHA-1: c99552ee5a6941b14a7df37c768e3da3d5e7374f SHA-256: bdf7a6ca8f92a869cfb2439cad976b449a70bdf2fb997dfe27dbdcfb8e388d84

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to external websites that advertise free game hacks and generators for popular games like Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/roblox-download-chip-windows-7-free-game-hack, is flagged as a lure for game hacks. This suggests the document's purpose is to trick users into downloading potentially malicious software disguised as cheats or generators. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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/roblox-download-chip-windows-7-free-game-hack PDF link annotation
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-hack-me_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/113-hacked-client_GM479516143.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/money-cheat-for-ro-port-tycoon-on-roblox_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/robux-com-free_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-rewards_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-free-robux-no-hack-or_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-cheat-on-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-minecraft-maps_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_off00002eeb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EEB	22212 bytes
SHA-256: `5c0dcabb92fc0319f5f469bec470bba2ccdae8c8739ee1e8b3e5b8dbe0c1a916`
`font_01_sfnt_off00005ff1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FF1	19872 bytes
SHA-256: `a31dc362925b75203914dac81b21190da66ff5b419fb4a6695970c5b3df175e4`

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