Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a4bfc0cc8ebc3f…

MALICIOUS

PDF

42.7 KB Created: 2021-05-15 01:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e6b25bacf589aabe033331d0e8e0d59d SHA-1: 081cc88542e673027c535bcddf3db4506bfcd0e2 SHA-256: e2a4bfc0cc8ebc3ffc6b3c99d4c0c1d385462ca89d3581344a81e206c74629ae
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 targeting users interested in free in-game currency like Robux. The ML classifier also flagged this PDF with high confidence. The document body and embedded URLs suggest a lure for obtaining free in-game items, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/roblox36.com-free-robux-game-hack In PDF document text
    • http://wsit.at/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/robux-app_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/freerubux_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000481d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x481D 25456 bytes
SHA-256: 02dbec2144e8c3cf396f80e6250178985c7206c04ae127c16785b00220f0d761
font_01_sfnt_off00008342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8342 18756 bytes
SHA-256: 75a7293df35b739ae2294dba45007dab7b7658b4df7c6a7e046c10781a1fd260

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