Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2063143e85e52de…

MALICIOUS

PDF

59.4 KB Created: 2020-08-19 08:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae1cdc648f1ca18ecc705456c3190163 SHA-1: df192ad30cde42029022052905be999eccc9f6d9 SHA-256: e2063143e85e52deb01dff94b44b2763612416023a7240010cb0d2b655f95c86
150 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=antecedentes+del+muralismo+mexicano+pdf', disguised as a document about Mexican muralism. It also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive document title and a malicious redirect.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=antecedentes+del+muralismo+mexicano+pdf
    • http://files.totalbodyfusion.shop/uploads/1/3/2/3/132303170/domakivifomegosozuw.pdf
    • http://files.omorikuratau.com/uploads/1/3/1/4/131406607/f45922d3c07c.pdf
    • http://files.sherrildouglas.com/uploads/1/3/1/4/131407315/270398.pdf
    • http://jutodiwof.bodilycharm.com/uploads/1/3/1/1/131164250/8516140.pdf
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/abstract_nouns_practice_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/bikiponunojilojevesod.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/posotolaravejeke.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7901/files/general_biology_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/46886789639.pdf
    • https://cdn.shopify.com/s/files/1/0448/0358/8258/files/2d_character_sprite_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/clicker_heroes_solomon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/dokitusiwem.pdf
    • https://cdn.shopify.com/s/files/1/0446/5927/7987/files/cutting_edge_pre_intermediate_student_s_book_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12410546401.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_off0000a7ab.bin
0edb3fab2d332325311e4d05073f3099e96913a366ff8bbcdccef2ef9e19d1df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7AB 5360 bytes
font_01_sfnt_off0000b9ca.bin
eb4ed9dfa1c0f3073fe48c9efb874558f7a1f4b6968d5a714cb1a6b66ecd899a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9CA 11348 bytes

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