PDF malware analysis — malicious · e0527f927837bfdd

MALICIOUS

PDF

42.2 KB Created: 2021-05-15 02:37:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: a4a324bd3e6c56785e06ba93487b62b5 SHA-1: 6d77764f696fd71ed67ef2a3ad82fa6fc84037e7 SHA-256: e0527f927837bfdd821ab169b4870cec0da2233e1a3124229f683ca56dca7e16

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, disguised as game hacks and generators. The primary lure is the URL https://netcdn.xyz/app/431946152/rbx-hut-promo-codes-game-hack, which is designed to trick users into clicking through to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at driving traffic to malicious sites.

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/431946152/rbx-hut-promo-codes-game-hack In PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/haktuts-free-spins_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/robux-online_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-robux-group_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-free-robux-codes_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
`stream_003_off00004a31.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A31	24536 bytes
SHA-256: `19e22c80a30d9b37a9cbfa6b9c5f514c47d0ec53da4691dec2bceb272445f318`
`font_01_sfnt_off000081ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81EA	18544 bytes
SHA-256: `3932e00da52bee9380420d38fb2034f39e9e0515dfd29b0dacfc54573cc91d35`

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