PDF malware analysis — malicious · 58211edbcf69a316

MALICIOUS

PDF

36.2 KB Created: 2021-07-04 07:34:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 1999bc075486ec04387564261d6d4d76 SHA-1: 4187f064fb8547a56b4acacaf156d135e2b0429a SHA-256: 58211edbcf69a3169ddb9d51c6d60386fe833941acbdabd5c6fe40c53de28af3

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one to a known malicious redirector, designed to lure users with promises of game hacks and free currency. The document body and heuristics indicate a phishing or scam attempt, likely serving as a lure for further malicious activity. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

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.
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.
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/406889139/coin-master-redeem-code-free-game-hack In PDF document text
- http://www.jsvillas.com.tw/assets/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/free-roblox-website_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/hack-chakra-naruto-final-bond-roblox_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/builders-club-roblox-free-account_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/roblox-prison-life-btools-hack_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/free-generator-for-card-roblox-robux_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/tiktok-free-view-iphone-keychain_GM835599320.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/roblox-piano-sheets-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
`font_00_sfnt_off000033d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33D2	23988 bytes
SHA-256: `2f31c95a8722313788ad032125a3fec08aeff61d15d6dac1059f0575057c087c`
`font_01_sfnt_off00006a82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A82	18432 bytes
SHA-256: `c68eb17dffb0d99ef1411e37b8b483e0576a304e68482a2bd2f60f2c06c0ac6c`

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