Malicious PDF — malware analysis report

Static analysis result for SHA-256 0034500c6ce9432c…

MALICIOUS

PDF

43.1 KB Created: 2021-05-19 13:26:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6686babe2ac517c8c76090bcaca22817 SHA-1: aae1acb4acca7d39962d701b0a1933575402a9f0 SHA-256: 0034500c6ce9432cd4284ad5b2e9f32834eb9cc214e875215edad1eb4448d055
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links designed to lure users into clicking on game hack generators and free currency offers, a common social engineering tactic. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of many external links strongly indicate a malicious intent to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to exploit user interest in free in-game items to facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-daily-free-spins-and-coins-link-game-hack PDF link annotation
    • http://www.jsvillas.com.tw/assets/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/robux-match_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ab4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB4 25240 bytes
SHA-256: 15ed32a31f24f5adb7bdc2f1dc6ad01bd4e29ffc00995b6e569d4d676f27f001
font_01_sfnt_off00008500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8500 18652 bytes
SHA-256: 9153e8ff570dd88c4a620839e4728b6040b622f618f6f7694a5530f56d9e896e

Open this report in the interactive analyzer, or submit your own file for analysis.