Malicious PDF — malware analysis report

Static analysis result for SHA-256 294729bfda2ef33f…

MALICIOUS

PDF

35.9 KB Created: 2021-07-07 18:47:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4330a7fcf4a14381085dee01b8ce8b12 SHA-1: 0946d122cd167d52ea33018e6ac57e54723b36ef SHA-256: 294729bfda2ef33f8be773961a4647f4bd56df99f396e8f38bf501d1ac3fec90
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, such as 'minecraft-windows-10-edition-free-with-java-game-hack'. These links are designed to trick users into downloading further malicious content or visiting phishing sites. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to exploit user interest in free game items.

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.tw/app/479516143/minecraft-windows-10-edition-free-with-java-game-hack In PDF document text
    • https://c2o-library.net/catalog/repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/game-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-wings-of-liberty-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hoew-to-fly-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-2021-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/ninja-legends-roblox-op-hack-script_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/ss-by-snape-2021-hack-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/kids-58-robux-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-cheat-engine-change-stat_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_off00003358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3358 23208 bytes
SHA-256: c1e43b1840ac923a49cc9b80a6ee6be466ddb33d941e85d6e4b99f6d835ba0a9
font_01_sfnt_off000066c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C3 19256 bytes
SHA-256: db7c9e1b055b6a0009d7eafceffa949439087e07e988d1b4c0d4927b17b9e556

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