PDF malware analysis — malicious · 3c1295b1c3b585e3

MALICIOUS

PDF

32.5 KB Created: 2021-05-15 05:05:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 3bf2a5051d408ff0dab901e85aaed373 SHA-1: 4f05bd5a7310a5db5a1cd3eae8ceb9ef8dc6a6f4 SHA-256: 3c1295b1c3b585e3d8a2ffc44e65fb21f54e7c7723736ba4a02910adc2aaad6b

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, disguised as game hacks and generators. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-invite-friends-free-spins-game-hack. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 3

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.
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-invite-friends-free-spins-game-hack In PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/free-minecraft-client_GM479516143.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/wurst-115-2_GM479516143.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/oprewards-login_GM431946152.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/free-robux-safe_GM431946152.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- https://mylittlebigthing.com/assets/images/posts/uploads/files/coinmaster-twitter_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004c30.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C30	25268 bytes
SHA-256: `1848c61db266345a52f3ecf5cc101a89a445179088440ecffb15c05966b30729`

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