Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec00a889e3d6670…

MALICIOUS

PDF

108.3 KB Created: 2020-09-01 03:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 915376063d5ad5539b90d67b3330eeab SHA-1: c650b79b1a96c3e22a480d442a32b0d3f988b23a SHA-256: 5ec00a889e3d6670c35afaea3cf39ddd70056e5668ce0e71f46a696a286da62f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one prominently pointing to 'ttraff.ru', identified as a malicious redirector. The document body, though heavily obfuscated, includes the same URL, suggesting an attempt to drive traffic to this malicious site. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/wix?keyword=botanical+names+of+all+plants+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdf
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/43._0799_79._0747.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/90249124563.pdf
    • https://cdn.shopify.com/s/files/1/0459/9339/4338/files/xapegabetijugaxavapiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/7622/2118/files/wizarawesoxisef.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe9df4e1fb954b29902d38cc3d2145f9.pdf
    • https://static.usrfiles.com/ugd/9eb187_ed6c297ad29f49ccaebaf1665cd033a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_74a5ce99115d458bb9fffb5bc40a766f.pdf
    • https://static.usrfiles.com/ugd/217d68_a63ddd16bfb84dad99f07259b0899c58.pdf
    • https://static.usrfiles.com/ugd/6908d7_51cd8ed26df34eaf9d2faf3a29bc60af.pdf
    • https://static.usrfiles.com/ugd/01bc73_1e6d0af6e21541939fff096f45764ab5.pdf
    • https://static.usrfiles.com/ugd/b914b5_c942e0f2dd5349d182a24588315ec9a1.pdf
    • https://static.usrfiles.com/ugd/de60da_d5a2271b8f1746509b2b22b0e431fb82.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014c49.bin
6126752d482d2a94ba6cd9defb1c5b3975d306066701c9b21434b6b03e34de13
pdf-font-stream PDF embedded font (sfnt) at offset 0x14C49 5256 bytes
font_01_sfnt_off00015e1e.bin
1db6d80bf5380f033dff322f0b97a694f9c88c31f94d20f755772930bb4be77d
pdf-font-stream PDF embedded font (sfnt) at offset 0x15E1E 15708 bytes
font_02_sfnt_off00018f12.bin
072ac6eb6bd86dcb268cb218c76300547e4ac517fea74484b87be7748e50e193
pdf-font-stream PDF embedded font (sfnt) at offset 0x18F12 16136 bytes