PDF malware analysis — malicious · 658141935929b316

MALICIOUS

PDF

42.8 KB Created: 2021-05-16 23:41:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 519d5078c8852e8697965ba6014b92f1 SHA-1: 6c5385edb17e6a3ba2d482d88e64086684205a34 SHA-256: 658141935929b3163a485ee0eb91a7d43f61dc215fe4ac523f4da2e72a27bed4

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free generator / game hack' to trick users into clicking malicious links. The primary URL, 'https://netcdn.xyz/app/406889139/coin-master-rewards-game-hack', is identified as a malicious redirector, likely leading to further malicious content or downloads. The presence of multiple similar URLs suggests a campaign focused on exploiting user interest in in-game advantages.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-rewards-game-hack In PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/clean-master-coins-hack_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/make-robux_GM431946152.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
- https://coinmasterspinandcoin.comIn 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
`stream_003_off00004d02.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D02	25932 bytes
SHA-256: `e38b3d3fe0555c6f627d4aa9e328daea839a62f287d7fb10f76592802ed00597`
`font_01_sfnt_off000085e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85E4	17884 bytes
SHA-256: `acbd2960432ed6aaee9cffad063da1b3d43b5b4e200ce15de4e80cb136e5b59b`

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