PDF malware analysis — malicious · e4d33746f5dd4e88

MALICIOUS

PDF

47.9 KB Created: 2021-05-10 16:49:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: a26a7a062fb9bb9e229dcf4ae370fa65 SHA-1: 2698e2bac3266ceae4dfa8f6230a0ec34a7a0dcc SHA-256: e4d33746f5dd4e886d6599035ec2d8f05e6bda05a990e2ddac9ad051b1c45065

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure related to game hacks and presents a fake CAPTCHA to trick the user into interacting with the document. It embeds multiple URLs, including one pointing to a 'roblox-re-game-hack' resource, suggesting a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, supporting the observed lures and embedded links.

Machine Learning

Nyx PDF Classifier malicious score 0.9922

Heuristics 5

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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 https://netcdn.xyz/app/431946152/roblox-re-game-hack PDF link annotation
- http://iedarelief.us/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://iedarelief.us/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
- http://iedarelief.us/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
- http://iedarelief.us/images/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
- http://iedarelief.us/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- http://iedarelief.us/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
- http://iedarelief.us/images/wurst_GM479516143.pdfIn PDF document text
- http://iedarelief.us/images/coin-master-hack-online_GM406889139.pdfIn PDF document text
- http://iedarelief.us/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- http://iedarelief.us/images/how-to-use-redstone_GM479516143.pdfIn PDF document text
- http://iedarelief.us/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://iedarelief.us/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003fa6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3FA6	27992 bytes
SHA-256: `319c40cb68cfa4baff0868e15f0170219db2ef5662e54a5e6149f0907c1d110a`
`font_01_sfnt_off00008000.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8000	8132 bytes
SHA-256: `e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787`
`font_02_sfnt_off00009aed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9AED	17784 bytes
SHA-256: `e51c91fae2f03f6f1e769b6466fc692d64b30edfed93825068737b7a11e94355`

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