Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f9c0604404dc29…

MALICIOUS

PDF

36.5 KB Created: 2021-07-05 06:11:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 373933a5b67040240ba07c48355d3d64 SHA-1: dd89f02ff40422788d0635f38d7855119ffa3339 SHA-256: c9f9c0604404dc297b701f9531694fdc267ce53e26c4e1cef29d3a650c86a805
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector, disguised as a generator for game hacks. The document body and embedded URLs explicitly promote 'free coin master coins and spins' and similar game-related cheats, indicating a phishing or scam lure. The ML classifier also strongly flagged this PDF as malicious.

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/406889139/free-coin-master-coins-and-spins-game-hack In PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/hack-robux-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-hack-roblox-and-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-robux-generatoir_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/roblox-the-future-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn6blitar.com/__statics/gudangsoal/files/como-hackear-cuentas-de-roblox-espaol_GM431946152.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_off000037a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37A5 23180 bytes
SHA-256: 32b714349230c368fe6e34c388ba00bf3bb464640b0929277f4a4415eea62bcb
font_01_sfnt_off00006be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE9 18348 bytes
SHA-256: cc12283f691ecd9c6c4381c5355a15c3235cfa1ea9601b68c1f91d3883d88a7b

Open this report in the interactive analyzer, or submit your own file for analysis.