PDF malware analysis — malicious · ce2ddfc76053ee8c

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 15:05:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7693df9f93bacd9c8fb23153e88a2944 SHA-1: 9b7af3534a81fbcb76920aff282ed5cfa675622a SHA-256: ce2ddfc76053ee8cb441de5a713b20e63b5d9b2272d82408116522e5fda203a4

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external links, masquerading as game hacks and generators, which is a common lure for phishing and malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to redirect users to potentially harmful sites. While no scripts were directly extracted, the nature of the links and the ML classification strongly suggest this PDF is part of a malicious campaign, likely leading to credential harvesting or further payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9748

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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.online/app/431946152/robloxmatchcom-free-robux-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-views-on-tiktok_GM835599320.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-hack-client_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-legit_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/tiktok-free-download-for-pc_GM835599320.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004de8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4DE8	24900 bytes
SHA-256: `c8744ccbe7b64232a84ee3a11b02026a4925aa2c11af60f4a40afa03c9997f5b`
`font_01_sfnt_off0000872f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x872F	2844 bytes
SHA-256: `baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a`
`font_02_sfnt_off000090f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90F1	18848 bytes
SHA-256: `ab697af47372efef3bc892e863fb86233d1822f3405b26a2011cbdc17c8d7041`

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