Malicious PDF — malware analysis report

Static analysis result for SHA-256 1960f90d413b8881…

MALICIOUS

PDF

34.2 KB Created: 2021-06-19 09:38:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 371f3cc8668135c5560af3d4e1c633a5 SHA-1: ff8a996300bc6ae9d12b5c38f737c8382b7b22a1 SHA-256: 1960f90d413b8881d03a75efee9830645648d39f8e3f5847fad293703cab40bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The document body and heuristics indicate a lure to trick users into visiting these malicious sites, likely for further exploitation or malware delivery. No scripts were extracted, but the primary attack vector is the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-base-wars-hack-game-hack In PDF document text
    • http://www.jsvillas.com.tw/assets/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/cheat-hacks-in-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/comment-hacker-roblox-sans-logiciel-youtube_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-attack-hack-apk_GM406889139.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
font_00_sfnt_off000030d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D9 21796 bytes
SHA-256: 73650522dde7a8fad1238763a2b55bf6afecffcacede38cbbbc17d886e7127d9
font_01_sfnt_off000060d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D9 18852 bytes
SHA-256: 76bab5d1f69c1b6a4e7c51cf7708cc8c77d867938509e8ffb59d411b5d7b78dc

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