Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e69fad4f202041…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 20:55:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 68d75a9aaef8e1f29fa6d79e7ec74a1c SHA-1: 4be281fc86d7c4e4ddee09df838252a4b18d0381 SHA-256: 86e69fad4f202041619100d4a0d3aba793e7032b00499f519142809407b5d878
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users. It contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/how-to-make-free-robux-game-hack, which likely serves as a gateway to further malicious content or downloads. The document's structure and embedded URLs suggest a phishing or scam campaign aimed at users seeking in-game currency or cheats.

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/431946152/how-to-make-free-robux-game-hack In PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-free-in-app-purchases_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_off00003030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3030 22736 bytes
SHA-256: dda0bbbfb82150dd0168f50b4196014532e56fb6e05aa1e82ff9ddb9e320db4e
font_01_sfnt_off000062f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F0 19244 bytes
SHA-256: 6b22af1083df9260d35a8428a36ac91eb4c7dbc1159f4e02fe88489ba0efcc00

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