Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fcff8fd44eccea…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 12:02:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e1c895795c23cd155eeced51f8543760 SHA-1: ba607bd40f0eb4c72262d7e9e1ec8b993fae52e7 SHA-256: e0fcff8fd44ecceadb485a20ab6f05b6fe49dda98bf88d9f32e2d892b5daef9c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and virtual currency to trick users into clicking malicious links. The primary link, http://netcdn.tw/app/431946152/free-robux-no-verify-2021-game-hack, is identified as a known malicious redirector. The document's content and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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/free-robux-no-verify-2021-game-hack In PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/free-robux-created-by-robuxian_GM431946152.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/how-to-use-roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/hack-para-roblox-dragon-ball-rage-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/hack-master-coin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://elearning.mtsdarulhikamcirebon.sch.id/__statics/gudangsoal/files/how-to-open-cheat-engine-in-roblox-2021_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_off000030b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B8 22192 bytes
SHA-256: a5e0d5151eb4afafa6e0a1614ee385a14b3272018b4954c2360cc0bc25411a21
font_01_sfnt_off0000621b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621B 19552 bytes
SHA-256: e09a116ef2773d205446325b2d9f1a936106eb792045e06ccc5d6ea31c8b4aca

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