Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bdf1fd8b1d7d71b…

MALICIOUS

PDF

46.7 KB Created: 2021-06-11 08:46:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 876bcd795b53e59ad38c8aa6a9d692af SHA-1: ce34ef53768dfa25cffd4aff62fa72ce8c1f4ad6 SHA-256: 1bdf1fd8b1d7d71be76674104dee2c4ee57dc7c0a022daa4fce7f82a650cf72d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically a URL promising free Robux. The ML classifier also flagged this PDF as malicious with high confidence. The document body and embedded links suggest a lure for users interested in free virtual currency or game hacks, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 3

  • 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.tw/app/431946152/robux-for-free-for-roblox.com-mobile4free24.com-game-hack In PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/without-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/rape-simulator_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-trick_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_004_off0000524f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524F 28192 bytes
SHA-256: 1f6e11d07a530f01720892339f5ed3a472cc0937c7235e023ef26a1fd915bbad
font_01_sfnt_off00009253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9253 18916 bytes
SHA-256: 7061e933453795fbc3f570536637d91fbdad6684d7b243381ab547989d1c54e5

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