PDF malware analysis — malicious · 34ed2c483f07b56f

MALICIOUS

PDF

42.1 KB Created: 2021-05-14 20:45:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 8b4201f276c152499ceb72674f966605 SHA-1: 0fd1dd8d1d6444957afdfb33c01d9b35a6af6c94 SHA-256: 34ed2c483f07b56f9fceaf4e10b545e1986144ca65957a71b9fa5dd7452761cd

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically advertising free game generators and hacks. The primary lure URL is https://netcdn.xyz/app/406889139/free-25-spins-coin-master-links-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive users to potentially malicious websites, likely as part of a phishing or scam campaign.

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/free-25-spins-coin-master-links-game-hack In PDF document text
- http://ikig.ru/images/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/free-coin-master-game_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
- http://ikig.ru/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/blox-rewards_GM431946152.pdfIn PDF document text
- http://ikig.ru/images/hack-coin-master-game_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/www-rbxhut-com_GM431946152.pdfIn PDF document text
- http://ikig.ru/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
- http://ikig.ru/images/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/coin-master-heaven_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/coin-master-free_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
- http://ikig.ru/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
- http://ikig.ru/images/free-robux-generator_GM431946152.pdfIn PDF document text
- http://ikig.ru/images/minecraft-windows-free_GM479516143.pdfIn PDF document text
- http://ikig.ru/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
- http://ikig.ru/images/coin-master-unlimited-spin-hack_GM406889139.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_off000045c9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x45C9	25904 bytes
SHA-256: `b3dce6a5b5ebc9c76aff90b4bb1e281e4b1648b86243d653db4bf83c957a0551`
`font_01_sfnt_off00008239.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8239	18316 bytes
SHA-256: `7fa45621bf9a4728c899947fc0d1a2becd31993fea733f0a04eabb1660a2ec34`

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