Malicious PDF — malware analysis report

Static analysis result for SHA-256 877ec6c4090cb030…

MALICIOUS

PDF

35.2 KB Created: 2021-07-08 21:30:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 04f0f901704a6bad621495d6eb7d404b SHA-1: c3bf2d03ed3ba8b26b5c71d530c5669dd5dc8afd SHA-256: 877ec6c4090cb03000975a9aaf5c3f227fb7c8769ac3aa4de903f99615a89c77
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/479516143/free-minecraft-hosting-game-hack. The document body and extracted URLs suggest a lure for game-related cheats or items, likely to lead users to a malicious site. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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-hosting-game-hack In PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-robux-scams-in-groups_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-cloth-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coun-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/minecraft-hacked-client-download_GM479516143.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_off00003424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3424 23224 bytes
SHA-256: b1664f17867bd90d887eac66ad2c7fd35c1707d3147389d5ecf47dd2dc38851b
font_01_sfnt_off000067fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FD 17996 bytes
SHA-256: bf6ae4c6721fa3eadf2b386a9cfec38fcd2e671f0767c49619a657aa344fd652

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