Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7eb6d4c161c9c7a…

MALICIOUS

PDF

46.9 KB Created: 2020-08-04 10:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ca92e5e4ab502fd4435170df3463eee SHA-1: 4805bef2c6b9beb573c8b0efcfc11593d85ef856 SHA-256: a7eb6d4c161c9c7a44df08236004cfbad20e1e60cb236d5447dad6c0922b2b10
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=mapa+turistico+la+paz+bolivia+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are to Shopify-hosted PDFs. The document body, though heavily obfuscated, also contains the same malicious URL. This suggests the primary intent is to redirect the user to malicious content.

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.
  • 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.
  • 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://ttraff.cc/pify?keyword=mapa+turistico+la+paz+bolivia+pdf
    • http://files.atorosehulman.com/uploads/1/3/0/7/130776886/zaratiroradilov-gunomogurat-vuxolute.pdf
    • http://files.gaetaboys.com/uploads/1/3/2/6/132682471/tivenavitev_rajifenu_lizamosonevijeb.pdf
    • http://files.saintpetersriceville.com/uploads/1/3/2/3/132303099/7796715.pdf
    • https://cdn.shopify.com/s/files/1/0437/4455/9258/files/pisarivadobok.pdf
    • https://cdn.shopify.com/s/files/1/0438/5649/4757/files/welivepijubutoviwi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/66137091452.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/pathfinder_mythic_adventures.pdf
    • https://cdn.shopify.com/s/files/1/0439/7219/8558/files/denupikixejoro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mofofuledezenededur.pdf
    • https://cdn.shopify.com/s/files/1/0439/8101/3150/files/fesodadofajevefed.pdf
    • https://cdn.shopify.com/s/files/1/0434/1723/9704/files/gubaxokinarumijofabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/36181560230.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076e6.bin
28b0de42d6e0ccaa43bef7fcd29eb3004fbbb91a09fbd6948b8c2c4a70c24f33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E6 5404 bytes
font_01_sfnt_off0000896f.bin
d45d3cf5a6ce442128211558fe7b69eb49f096a381de34c29d0f3928a7768764		 pdf-font-stream PDF embedded font (sfnt) at offset 0x896F 10972 bytes

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