Malicious PDF — malware analysis report

Static analysis result for SHA-256 972834e8628defd2…

MALICIOUS

PDF

35.3 KB Created: 2021-06-20 06:43:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3a042ee4dc07e844513e8cc89dae8d89 SHA-1: 665039efeccfb81e543855075b0ed3ff5b8f13b1 SHA-256: 972834e8628defd2de0e3e8546dd0d975273560ba169f578b91ee3aa0b0734b2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains numerous embedded links, identified as a link farm, that promote "free hacks" and "free currency" for popular games. The primary malicious URL is http://netcdn.co/app/431946152/how-to-trade-for-free-in-roblox-game-hack, which is likely a lure for a scam or malware download. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.co/app/431946152/how-to-trade-for-free-in-roblox-game-hack PDF link annotation
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/free-robux-roblox-hack-swirlycandygurl_GM431946152.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/ro-ghoul-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-hack_GM431946152.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accaunt_GM431946152.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/roblox-followers-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.nurulhuda.sch.id/__statics/gudangsoal/files/coin-master-hack-online-android_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_off000032b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B4 22620 bytes
SHA-256: ea17b6d64a0ab9ef30592b2e97e24771d14f2e21f0c928b09af296ab99c15e85
font_01_sfnt_off0000650b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650B 18988 bytes
SHA-256: 2c26f64795caa59644fef071ef3f562ed724a8b1bd1e3e1c6e851d159cd84690

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