PDF malware analysis — malicious · 53bae1750203f14e

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 11:02:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: a98ec090a4d5a921d32c477a4b76e0b0 SHA-1: 61b3fbd8c23b8fde5af94456314d573f96384c6a SHA-256: 53bae1750203f14eb01e002ae1c75cf0cf1fa4e4a7fe0b3a67bc07fbd4bdc4cf

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to what appears to be a game hack generator, specifically for Coin Master. One of these links, https://netcdn.xyz/app/406889139/coin-master-pc-hack-game-hack, is identified as a known malicious redirector. The document body, though partially corrupted, also contains references to game hacks and URLs, reinforcing the lure. The presence of embedded URLs and the nature of the content strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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/coin-master-pc-hack-game-hack In PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-gang_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-hack-download_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-spins_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-free-clothes-hack_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_off00004d47.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D47	25148 bytes
SHA-256: `d7a5036792a7c0495782996c35a9ae9f33f4a26211d2e3140e63e50e3946fbee`
`font_01_sfnt_off000085b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85B2	17868 bytes
SHA-256: `2afdedecde820afe22901ca35ab1de7d9bd06462c55bbc4b8ddd703c94e78653`

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