Malicious PDF — malware analysis report

Static analysis result for SHA-256 7497f6c9e7e658ae…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 17:47:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: aa7906401696ae0eea7858c8471aee1a SHA-1: 4580ef34e2b6fbababa68f9c6f31f74fd01186a2 SHA-256: 7497f6c9e7e658ae7817d8b49f95524c51318239208c9a3ded9a25bbd14382d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as generators for popular games like Minecraft and Roblox. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common phishing tactic. The primary malicious link directs to http://netcdn.tw/app/479516143/free-minecraft-alt-generator-game-hack, which is identified as malicious infrastructure.

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/free-minecraft-alt-generator-game-hack In PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-robux-2021-no-waiting_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-intant-robux-genertaor-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-get-free-robux-hack-on-pc_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-robux-hacls-no-download-survey-or-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/roblox-2021-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/archery-master-3d-hack-unlimited-coins-cheats_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
font_00_sfnt_off00003256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3256 21972 bytes
SHA-256: 9c63de1032c4595ff1ac43a10a11c793ef023ba3dc2fe91d066e2c0562d906c4
font_01_sfnt_off000062da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DA 18072 bytes
SHA-256: c8f7285ff86763399e2a5ac55585dfb2fc2dace9f282f455ab031e88ea571d9c

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