Malicious PDF — malware analysis report

Static analysis result for SHA-256 efadae811a1c4c77…

MALICIOUS

PDF

60.9 KB Created: 2020-08-14 21:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c6920af68afeb82bfe36721449302f5 SHA-1: 4807f093f458df2bed01a62b8d0a6a5bfd85b308 SHA-256: efadae811a1c4c77881c92061a98bc1f4b531324f8e88b28489de3c284d7b23e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One of these links, 'https://ttraff.ru/pify?keyword=marriage+anniversary+song++in+telugu', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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=marriage+anniversary+song++in+telugu
    • http://files.serangdentalassociates.com/uploads/1/3/2/6/132695732/paxisatodubu_karisigefalomex_rovibejunawogut_tedepogaruk.pdf
    • http://jumuxebun.smothermanbatlab.com/uploads/1/3/0/9/130969352/ffc5a314333.pdf
    • http://midubuve.hamptonlinks.org/uploads/1/3/1/4/131438268/a098d2aa56.pdf
    • http://files.myloveall.com/uploads/1/3/1/3/131398234/rotuba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0904/7717/files/91078683047.pdf
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/xesugenojolo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9863/files/zuvinomituluzexes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/dudeguxirofedurobe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4511/0438/files/synchronous_alternator.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/8834251553.pdf
    • https://cdn.shopify.com/s/files/1/0430/5374/4279/files/46938076855.pdf
    • https://cdn.shopify.com/s/files/1/0433/5314/5495/files/konudawagabu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9952/9120/files/introduction_to_network_cabling.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/spring_framework_reference_documentation_4._3.pdf
    • https://cdn.shopify.com/s/files/1/0429/0805/7759/files/kuzaxopimuragigig.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/lowawuneboxigifirabutufug.pdf
    • https://cdn.shopify.com/s/files/1/0434/0400/1443/files/automatismos_electricos_cableados_y_programados.pdf
    • https://cdn.shopify.com/s/files/1/0433/7241/3079/files/kituw.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_off0000a838.bin
1d77953d2b31053022678b2f2f36b9f82295ab43673bb213fa589e45e810266b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA838 5020 bytes
font_01_sfnt_off0000b96c.bin
8940cc47089c2705cc23aab669b8176057c31d99963899b35315f35307af6faa
pdf-font-stream PDF embedded font (sfnt) at offset 0xB96C 14456 bytes