PDF malware analysis — malicious · 49e021463e15335b

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 07:14:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: bbb18967e5a66e84d77af117bc6bfdc0 SHA-1: 921df3ea9845eee6d2c29bfe65820109bee0a6c0 SHA-256: 49e021463e15335ba441bf3c1384ad6ed6f4502c4f7c441f32e4f7e32f2841d1

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure and game-related hack tools, indicating a lure for users to download potentially unwanted or malicious software. The presence of embedded URLs and a 'free generator / game hack' lure strongly suggests a social engineering tactic to drive traffic to malicious sites. While no scripts were extracted, the document's structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-hack-tool-download-pc-game-hack In PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/master-coin-hack-apk_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/how-to-get-tiktok-followers-for-free_GM835599320.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/do-you-get-free-roblox-builders-club-on-the-weekend_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.captaingogo.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-july_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
`font_00_sfnt_off00003065.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3065	22296 bytes
SHA-256: `f029c62aa2cc0b10f1a184200e5cc5b00553bafd3cc899bb525c778f783e131a`
`font_01_sfnt_off000061fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61FA	19316 bytes
SHA-256: `6deb29fcff388e5d76ccde0fcde5eff40e9a0bad9b5966dc11c6189b821f6e67`

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