Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8fd2486917f4872…

MALICIOUS

PDF

36.1 KB Created: 2021-06-30 10:44:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a39312adb78c980a5fd6e1d7189099ac SHA-1: 5b4208dbaa8fea453aafdee9742b36f517fea1d7 SHA-256: e8fd2486917f4872270a9df2efe26a50d493bc1a76eed290b503f69f180a2e65
200 Risk Score

Malware Insights

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

This PDF document employs a lure of free game hacks and generators to trick users into clicking malicious links. The document impersonates brands like Microsoft, directing users to a known malicious redirector infrastructure. The embedded URLs suggest the document is designed to facilitate the download of a second-stage payload, likely a game-related cheat or hack, which could be malware.

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/jjsploit-v2-roblox-hack-game-hack.
  • 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/jjsploit-v2-roblox-hack-game-hack In PDF document text
    • http://lib.kunci.or.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/robux-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/elemental-battlegrounds-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-robux-on-ipad-only_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-get-any-item-free-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-hack-tools-in-all-games_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.

FilenameKindSourceSize
font_00_sfnt_off0000330b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x330B 22748 bytes
SHA-256: 5f7b9e0eae36d1b756871da98af5109461e1795549e8d9ce06f589cfe1d3329c
font_01_sfnt_off0000661d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661D 19668 bytes
SHA-256: e912f2de0503f6d3966740516599351e86d140851bc5e5c387c542541686e6e1

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