Malicious PDF — malware analysis report

Static analysis result for SHA-256 6005f5821408deaa…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 20:31:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9a1a0ea0a50dea0ef5b8f5611e8b69dc SHA-1: 0b11ceb56c9caea016cca6b60bfd1855c8a9782f SHA-256: 6005f5821408deaae1ad95afae952f919285968307222523ab771513ad131c5c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators' for popular games. The ML classifier strongly flagged this PDF as malicious. The primary lure appears to be a fake generator for Robux, a virtual currency, which is a common social engineering tactic to drive clicks to potentially harmful sites.

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-get-a-lot-of-robux-game-hack In PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/kengit-films-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/tiktok-free-online_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-robloxe_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/hack-app-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/tiktok-free-zong_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-ban_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-robux-secret-page_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-2021-free-spins-link_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_off000031b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B9 22328 bytes
SHA-256: c8d72ba1be296d00006a825c09eca3ea4b7ada6c0e9b6e63d576abcbb887853f
font_01_sfnt_off00006364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6364 18820 bytes
SHA-256: cdc6a2a788e7d1c038814bd34757d45de3c8708b5dd2a0e8e1b59012f3bb2d4a

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