PDF malware analysis — malicious · e52d69a87ae0408a

MALICIOUS

PDF

35.8 KB Created: 2021-07-09 16:23:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: e81988250cbb227dc602009c0717815c SHA-1: 00c7fcb255600494b56ab91c32750fc8b46c0364 SHA-256: e52d69a87ae0408afd807188f33b35647c840952bd299866baa3db68a8b69282

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains embedded links that redirect to malicious infrastructure, masquerading as game hacks and cheats. The primary link, http://netcdn.tw/app/406889139/download-hack-coin-master-apk-game-hack, is flagged as a malicious redirector. The document's structure and content suggest a lure to download potentially unwanted or malicious software, likely through a phishing or social engineering tactic.

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/406889139/download-hack-coin-master-apk-game-hack In PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/stop-it-slender-roblox-code-for-free-autfit_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/tiktok-followers-generator-free_GM835599320.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/dragon-ball-z-rage-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-hack-someone-on-roblox-like-anonymous-youtube_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/again-here-for-free-robux-on-roblox-com-free4mobile24-com_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-free-t-shirt-on-sale_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-script-hack_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-printable-roblox-party-invitations_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-win-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_off00003433.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3433	23040 bytes
SHA-256: `755fac2728f83cecb5bc39404dd42e602c703802923e9ee53ef392105094c59e`
`font_01_sfnt_off000067da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67DA	18760 bytes
SHA-256: `8333c8018b13bf52e37c7708f338d48787d19e9e4dbaf49a8c1071265ea55d63`

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