PDF malware analysis — malicious · 7eddd4dee26feecc

MALICIOUS

PDF

36.2 KB Created: 2021-07-04 00:36:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 4df2337c8abc3d472bd1e9e9c2deb9f5 SHA-1: c37c9dc6ef1250a566222c53082f242a739ef046 SHA-256: 7eddd4dee26feeccfdf5e30321d9061991a00283421706511fb8d34450d177b5

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game-related items to trick users into visiting a malicious redirector. The document contains multiple links, including the primary malicious URL http://netcdn.tw/app/431946152/free-roblox-accounts-with-robux-2021-game-hack, which is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed for user redirection to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 3

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.
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-accounts-with-robux-2021-game-hack In PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-robux-in-roblox-for-free-on-pc_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/follow-bor-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-robux-ohne-verify_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-shirt-roblox_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/roblox-playset-for-free-shirts_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-robux-hack-in-one-go_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-robux-consigue-robux-gratis-hoy_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/lua-script-hack-dinosaur-simulator-roblox_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-robux-instant-inspect-element_GM431946152.pdfIn PDF document text
- https://www.jogjamanisfoods.com/ckfinder/userfiles/files/hacking-apps-for-roblox_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_off00003c49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3C49	22844 bytes
SHA-256: `f90a8e9a0bf6cc4dd776eb0fa7125b11319a29fa053b0127cc5a35df65ffe792`
`font_01_sfnt_off00006f83.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F83	19780 bytes
SHA-256: `25192f6a53e08aa9ffc26a88a4bc642b185baba041384cccd6a0910bb22c1d67`

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