PDF malware analysis — malicious · 6487e2047a40a349

MALICIOUS

PDF

45.0 KB Created: 2021-05-14 18:57:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23

MD5: c7c66bb31ecf5c9cebe57d52d8c74a83 SHA-1: 861df2d1aabf690f533cc3d11c7170bb660edada SHA-256: 6487e2047a40a349564e3a2afe6a6877903d912011d4356877d7b3c34afe78cb

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external sites, many of which are identified as malicious redirectors or part of a link farm. The document body and extracted URLs suggest a lure related to game hacks or free in-game currency, a common tactic for distributing malware or conducting phishing. The presence of multiple redirector links indicates a high likelihood of a malicious payload delivery chain.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

Heuristics 5

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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 https://netcdn.xyz/app/479516143/free-minecraft-server-game-hack In PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/what-is-coin-master-app_GM406889139.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/claim-roblox_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/fb-coin-master_GM406889139.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/minecraft-hacks_GM479516143.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
- https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/coin-master-free-spins-hack_GM406889139.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_off00004a45.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A45	26104 bytes
SHA-256: `b49f7176fc0ec8c900364e635b3959fe9d6c676c9c6283e7161149ae4e1cd7e2`
`font_01_sfnt_off00008496.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8496	3092 bytes
SHA-256: `3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0`
`font_02_sfnt_off00008f40.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F40	17684 bytes
SHA-256: `971ebce79d03a5424fa8491ae570b1f65fe2ad06e00737069ab54be99501e2e8`

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