Malicious PDF — malware analysis report

Static analysis result for SHA-256 a67b6ded1ce966cd…

MALICIOUS

PDF

58.5 KB Created: 2020-08-14 01:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c8129884929a514e45d364e89354510 SHA-1: eac4155a06c3f521f8f9143d4aa46259370eda09 SHA-256: a67b6ded1ce966cd111b9d960d16e5ef575d0271c0c5f2c0f72c14931db1eec3
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=android+os+newest+version'. It also contains a large number of embedded links, many pointing to shopify domains, suggesting a link farm for SEO manipulation or traffic generation. The document body contains obfuscated text and URLs, including the primary 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.ru/pify?keyword=android+os+newest+version
    • http://files.kkountryfarm.com/uploads/1/3/1/0/131070846/5001481.pdf
    • http://files.atyourservicelimosjax.com/uploads/1/3/1/3/131383318/6830482.pdf
    • http://files.grundmeyerleadersearch.com/uploads/1/3/1/6/131636990/sifixoj_jutixepipi_bevasagipaxuja_sivosukisozi.pdf
    • http://files.shadeaustraliacommercial.com/uploads/1/3/2/8/132813998/4748252.pdf
    • https://cdn.shopify.com/s/files/1/0434/8474/1798/files/63742273397.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/discord_roles_ideas.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/26938991949.pdf
    • https://cdn.shopify.com/s/files/1/0434/7707/4086/files/besabine.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/prefix_and_suffix_worksheets_3rd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0440/8701/7637/files/sandvik_milling_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1586/files/gatezurudo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/vezetofe.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/wiwedunugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/system_identification_and_adaptive_control.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2650/files/lovadegisavonifunip.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/95533802720.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5081520916.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c25.bin
b57c96cf1456656112cc7d8c966b4200f5ff63533a19a27aebef2b650b41c6a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C25 4504 bytes
font_01_sfnt_off0000ab89.bin
237cafb28a88924d5e9290db9e1d520d4ca62bda03c24e43143ce40937ea43ba
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB89 10364 bytes
font_02_sfnt_off0000cf0b.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0B 4324 bytes