PDF malware analysis — malicious · 748bc005a1536595

MALICIOUS

PDF

35.3 KB Created: 2021-07-07 16:38:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 0344fb1711354fb7e53563535d3aa617 SHA-1: ac048fe06c17ec4112ac3f427403d5a9faedce3d SHA-256: 748bc005a1536595844f09a680887655d13aafaa7f52c5bfc3d5ae5b04e4e7c8

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games like Roblox. The ML classifier and specific PDF heuristics strongly indicate malicious intent, likely to lead users to phishing or malware download sites. Although no scripts were explicitly extracted, the document's structure and embedded URLs suggest a lure for initial access, likely via spearphishing.

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/431946152/how-to-hack-into-someones-roblox-account-game-hack In PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/roblox-como-tener-robux-gratis-2021-marzo-nuevo-hack-1millon_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/hack-for-roblox-jailbreak-download_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/robux-gratis-hack-descargar_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-roblox-rewards_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/apk-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/roblox-red-boy-hack_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/we-are-developers-hack-for-roblox_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/sites-robux-free_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-do-i-delete-roblox-baseplate-with-cheat-engine_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/roblox-on-xbox-360-free_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_off000031de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31DE	22548 bytes
SHA-256: `065f954579861f006c26a0d741e274f405aac715560c1f3c4d4251cf3ac3ea41`
`font_01_sfnt_off00006440.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6440	19324 bytes
SHA-256: `24cbb78c2e4d02f15d6dff94c04074d97d349401c8d74d3264b26149d869587d`

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