Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c1be7bb9a68873…

MALICIOUS

PDF

45.1 KB Created: 2020-08-17 04:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54cd29e8a99d2ca7ecb4609ed579a3f7 SHA-1: 99cf14ed3255c816606ebca8536704fcbce9b5a1 SHA-256: c1c1be7bb9a6887316e7e03800a8f312f5f2e1a4abbc7b73490fff0422847100
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, a common technique for SEO poisoning or creating link farms to distribute malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=software+conceptual+design+template', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the template lure and the malicious redirector URL, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

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=software+conceptual+design+template
    • http://madavanuf.cabogoldens.com/uploads/1/3/0/8/130874049/kunegod.pdf
    • http://files.inter-clubtennischampionships.com/uploads/1/3/1/0/131070207/8532081.pdf
    • http://fapak.gabrieliqbal.com/uploads/1/3/1/8/131855997/3108598.pdf
    • http://files.getjohnsoninsurance.com/uploads/1/3/1/4/131438459/5dad5b5c.pdf
    • http://files.mrwaldau.com/uploads/1/3/2/7/132740900/d7c21cb8d83e4.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2695/files/3009769867.pdf
    • https://cdn.shopify.com/s/files/1/0431/1774/0199/files/23427420651.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/technical_analysis_investopedia.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/bixiku.pdf
    • https://cdn.shopify.com/s/files/1/0445/2735/4015/files/tujobufogab.pdf
    • https://cdn.shopify.com/s/files/1/0430/4034/2169/files/52224932550.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/how_to_get_command_block_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/umbilical_cord_care_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/cyberlink_media_suite_10.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/65870565631.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6076/files/window_7_genuine_activator_software_free.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_off00007159.bin
b7ea3fa9b141245cfde75dce0467d816b631958e6cb0718667a38639f148a191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7159 5668 bytes
font_01_sfnt_off00008497.bin
c8d3296ca6dcb44a23a46c166c056331b454f7bfeb8b8636cefbe39a9026291d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8497 10176 bytes

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