PDF malware analysis — malicious · fe2d4c90ec5311a4

MALICIOUS

PDF

42.7 KB Created: 2021-05-16 05:44:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: c88c976bec81f2e419a073a6ad370ad0 SHA-1: bb0a373e9b8c9281d24cdda83e59709a5ee93dd5 SHA-256: fe2d4c90ec5311a45c2192a5977f2ee8c77b73b87fb2bb533a2f53011a0c4f28

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites that are flagged as malicious redirectors, specifically advertising game hacks and free currency. The document body and heuristic firings confirm a lure for game-related exploits. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a malicious redirection chain designed to lead users to potentially harmful content or further malware.

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/hackear-coin-master-android-game-hack In PDF document text
- https://www.contabilidadesomma.com.br/images/rewardrobux-com_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/roblox-controversy_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/robloxhacks_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-roblox-toys_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-robux-cards_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/roblox-cheat-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-hack-pc-download_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_off00004b51.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B51	25680 bytes
SHA-256: `dc0e4bb7dcbaed3938438831a8f0b79c42222106453808a72df012c54f98c296`
`font_01_sfnt_off0000857e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x857E	17888 bytes
SHA-256: `b97c247584d5923730467042a27b306812426488902e18325f6e1cb1e8c9f710`

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