PDF malware analysis — malicious · ec2a59cdad343d5f

MALICIOUS

PDF

44.0 KB Created: 2021-06-09 06:05:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: a92dfdaa3f706cf5a28174b28a6e1472 SHA-1: e5b57800d1d9774e4a9e1f00775dd7e452c56f81 SHA-256: ec2a59cdad343d5f684d3e26400afe406ac20c584fa46df6489a9cbd7cc11b4c

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external sites, many of which are presented as game hacks or generators, indicating a lure for users. The PDF_SEO_LINK_FARM heuristic suggests a large number of these links are present. While no scripts were directly extracted, the presence of embedded URLs and the ML_NYX_PDF_MALICIOUS flag strongly suggest malicious intent, likely to redirect users to malicious websites or download further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-hack-generator-secret-game-hack PDF link annotation
- https://lesegais.ru/images/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-mod_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/get-coin-master-hack_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-2021-game_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
- https://lesegais.ru/images/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/ww-robux_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-hacks-no-verification_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_004_off00004fb2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FB2	25532 bytes
SHA-256: `800be6115a5ad9311a979bbe8389641bcff5df5f6f00616adc88a723fed50e01`
`font_01_sfnt_off00008923.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8923	18284 bytes
SHA-256: `722019ef885005ef35384de28705aa80b8b76f2d4c4b402b8a0af77cad3bd4e4`

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