Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf2363ce98c5daf…

MALICIOUS

PDF

51.0 KB Created: 2020-09-28 20:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 037c93cb05f4edbab8855fd2d9e2bc32 SHA-1: 9bb1742a97491666f0aa7fa676a28de4b10f6d03 SHA-256: ebf2363ce98c5daf364a97bd4575ef4fd8d42566cc5886a40d2f96769fb00b8d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://gettraff.ru/mozel?keyword=amar+chitra+katha+bengali+pdf'. This suggests the document is designed to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of embedded URLs and the redirector link are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 2

  • 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.
  • 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://gettraff.ru/mozel?keyword=amar+chitra+katha+bengali+pdf
    • https://site-1037124.mozfiles.com/files/1037124/kowazedonulorawuvum.pdf
    • https://site-1036923.mozfiles.com/files/1036923/noxujokajev.pdf
    • https://site-1037178.mozfiles.com/files/1037178/remoku.pdf
    • https://site-1037192.mozfiles.com/files/1037192/majejiduliwomebaj.pdf
    • https://site-1036920.mozfiles.com/files/1036920/zinimejulitujinasovas.pdf
    • http://files.brewhoundsupplies.com/uploads/1/3/0/8/130873989/9318048.pdf
    • http://files.rozeefashion.com/uploads/1/3/1/0/131069899/506481882ef9.pdf
    • http://files.taftmusic.com/uploads/1/3/0/7/130738679/muxatuxekif.pdf
    • http://files.fogvapery.com/uploads/1/3/1/3/131382982/sukemu.pdf
    • http://tuvasi.harriscreekpta.com/uploads/1/3/1/4/131412290/5423395.pdf
    • https://site-1036725.mozfiles.com/files/1036725/wuberoputapikevutaboz.pdf
    • https://site-1036652.mozfiles.com/files/1036652/tupowapajejafevox.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045f7.bin
86ac94f38c12706f465e0abd5d7b9d079fe3661838e2357b30f606225d80d1d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45F7 5260 bytes
font_01_sfnt_off000057a6.bin
0921cdfd9848c01bbfb21d3a3d621db47ebdc403ca34edbf538b650b65f2f3e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57A6 10740 bytes
font_02_sfnt_off000079aa.bin
5e1b7685c74938a2ec49965e71fc8d171bb890fa7214f23c222ba71bacf2ab4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AA 9864 bytes
font_03_sfnt_off00009b93.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B93 16164 bytes
font_04_sfnt_off0000b0a8.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A8 4324 bytes

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