Malicious PDF — malware analysis report

Static analysis result for SHA-256 7424f3f6f9b8d359…

MALICIOUS

PDF

41.7 KB Created: 2021-05-18 01:43:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2e88c1060480c9c748eced38ca63d974 SHA-1: 0cb99155c901a9899c11ffa0c2b3d3362595248a SHA-256: 7424f3f6f9b8d359c9518f34f5901c344fd588b1d9b05d546ddc9a2ef9b8e94e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game-related content. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a lure for users interested in free game currency or hacks, which is a common social engineering tactic to drive traffic to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/how-to-log-out-of-coin-master-game-hack In PDF document text
    • http://educhina.mn/editor/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-coin-master-spins-and-coins_GM406889139.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
stream_003_off000047da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DA 24776 bytes
SHA-256: c37e0e9ae87446b7d89bdd8adf6fb79bf5e7aafa745b6c4192f79522cd341f0e
font_01_sfnt_off000080ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EF 18140 bytes
SHA-256: 3138221b31ed8b6406c0e26913c361d842eb1c4d2714b685327af50e84741aa0

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