Malicious PDF — malware analysis report

Static analysis result for SHA-256 d029561d0e590025…

MALICIOUS

PDF

33.8 KB Created: 2021-06-30 05:42:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 94707741b1a6c583c04a47b9c22e42d4 SHA-1: bd9ee3d7472df769c265439cab756c9710438797 SHA-256: d029561d0e590025ca218824a63047d5f9f712605de2d980262c07959ed403ab
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' or 'game hacks'. The ML classifier strongly indicated maliciousness, and the embedded URLs are known to be associated with redirectors. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick the user into downloading a secondary payload or visiting a malicious site.

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/835599320/get-tiktok-followers-free-game-hack In PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/robux-free-tips_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-hack-robux-420_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coinmaster_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-avatar-free_GM431946152.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_off00003049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3049 22140 bytes
SHA-256: 7c0598743660944c7ecd1be7dba114be6f326c9ea0a4be111f195a588e616cd3
font_01_sfnt_off00006176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 18208 bytes
SHA-256: 2c913cd2b1a0bf54f87f8719ad814203ec2f1a1a3b8e3f6b6a76b442a86e84f4

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