Malicious PDF — malware analysis report

Static analysis result for SHA-256 4567ef43e49041fb…

MALICIOUS

PDF

43.7 KB Created: 2021-05-11 20:06:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: dabc72df9738b02a8eed1f6b0e48ec5a SHA-1: 48dcaa577d5a2778a3de5558f55f15714d4fe4da SHA-256: 4567ef43e49041fba008640d2aed1f125d2c84764d358de56d68d1767c52801c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as free game-related content generators. The primary malicious URL identified is https://netcdn.xyz/app/479516143/free-minecraft-bedrock-server-hosting-24-7-game-hack. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/479516143/free-minecraft-bedrock-server-hosting-24-7-game-hack In PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/robux-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-game-download_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
stream_003_off00004e61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E61 24836 bytes
SHA-256: bffb10b3e687a9ce2b233eb2c1209f98892141a366e9a4cf2523307e7fc59651
font_01_sfnt_off00008664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8664 18916 bytes
SHA-256: a6a992a3af0fcbb09375a58681f9855b6f4353f5ebe3ed4f439c39f2227389ef

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