Malicious PDF — malware analysis report

Static analysis result for SHA-256 502b9316aa7e316e…

MALICIOUS

PDF

56.3 KB Created: 2020-08-19 06:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bbb02a7a9d050275ba5cc64484ee754 SHA-1: 737b9e30a94cd65170548cd2b60da74a5a10a01c SHA-256: 502b9316aa7e316e4192b657bfe0ccd870051421432c66447244144f06cc23c4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to guitar lessons and the malicious URL. The PDF also contains a large number of embedded links, many pointing to shopify.com, which is likely part of a link farm to improve SEO for the malicious redirector. No scripts were extracted from this sample.

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=livro+de+aula+de+viol%25C3%25A3o+em+pdf
    • http://files.christchurchchichester.com/uploads/1/3/2/8/132814030/vizagiwita-lomewepopor.pdf
    • http://files.friendsofcookforest.org/uploads/1/3/1/3/131384412/6848861.pdf
    • http://files.louisvillecebs.org/uploads/1/3/0/7/130739284/b9484a9761aad.pdf
    • http://defedute.patricedworkinart.com/uploads/1/3/0/8/130814124/c5ad9a.pdf
    • http://rasubod.shekhargn.com/uploads/1/3/0/9/130969764/f30be53e31de9be.pdf
    • https://cdn.shopify.com/s/files/1/0439/8520/7454/files/jofafodoleme.pdf
    • https://cdn.shopify.com/s/files/1/0435/3143/6186/files/81668246150.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/joxotukufonekozaxigipukix.pdf
    • https://cdn.shopify.com/s/files/1/0433/2155/7150/files/cracking_the_money_code_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/jujapete.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/create_tiny_url.pdf
    • https://cdn.shopify.com/s/files/1/0433/6880/8613/files/69504375027.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/72182222303.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/plexiglass_mirror_sheets_home_depot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/67261431785.pdf
    • https://cdn.shopify.com/s/files/1/0438/3899/6642/files/clear_acrylic_sheet_properties.pdf
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/raquitismo_en_perros.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007761.bin
c5f8940d352a24dd75d2e1e0abde4e8df487584d0f83cbc49bb217ec875f7fd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7761 5024 bytes
font_01_sfnt_off000087e4.bin
6711690db15b8589424e4fe11aab44a66e89e85ae254a3346981d3e9c72b4cf3
pdf-font-stream PDF embedded font (sfnt) at offset 0x87E4 12252 bytes
font_02_sfnt_off0000ada9.bin
0a2507360a40dd56b84230664db2b3a2689cb34b0aa642599c8245950ba374cb
pdf-font-stream PDF embedded font (sfnt) at offset 0xADA9 16304 bytes
font_03_sfnt_off0000c31e.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xC31E 4324 bytes