Malicious PDF — malware analysis report

Static analysis result for SHA-256 c075eecab7f83293…

MALICIOUS

PDF

40.4 KB Created: 2020-08-29 23:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 471e9357919b1ebebd8794cd21d4a752 SHA-1: cd795784a64bf14808743a58fdfb6f28b1d41e2a SHA-256: c075eecab7f83293b937e53c254c88d926160fcecf09c16cf34fe4bf046113b5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/wix?keyword=brian+kopps+1+60+alliance+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lure users to malicious sites.

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/wix?keyword=brian+kopps+1+60+alliance+guide
    • https://static.usrfiles.com/ugd/b8c837_5cc9eb59e8be491c9354263354800b60.pdf
    • https://static.usrfiles.com/ugd/67f5f7_b65b51c8b646406d98ac790e237391f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_12989437c7b045778bc8d97e3161f556.pdf
    • https://static.usrfiles.com/ugd/b8c837_023fcff311f84dc89e92900234c5be53.pdf
    • https://static.usrfiles.com/ugd/b8c837_b06b5aaf1a4144489b5c9a0afeb24d87.pdf
    • https://cdn.shopify.com/s/files/1/0459/9444/2909/files/59927565904.pdf
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/ebook_bryophytes.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/31947205559.pdf
    • https://cdn.shopify.com/s/files/1/0429/0543/6326/files/rebukaxepisub.pdf
    • https://cdn.shopify.com/s/files/1/0435/3864/5144/files/united_empire_guide_endless_space_2.pdf
    • https://static.usrfiles.com/ugd/cf14a4_f2819cd47e864b0b8a4a53a749e40127.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d398b0f79434bf4ac344646bc9b8364.pdf
    • https://static.usrfiles.com/ugd/3b7182_a71e7ce6fb9947178aee8fc31a609b35.pdf
    • https://static.usrfiles.com/ugd/b8c837_7430fe01572444d5a71cf611f5bbdda0.pdf
    • https://static.usrfiles.com/ugd/289c5e_04e9c1a816b8473fb6c289b8a637d6ee.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_off00005cfe.bin
e1ecc95bae919938ea959d8330cef121cca7bcc62c2df8d7daa97dd61332d26d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFE 5704 bytes
font_01_sfnt_off0000706f.bin
8a4205cdb3d53e5eaf9ca52fcaa99606c6c547b6fdcfd9d065cb75aaa467b5c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706F 10520 bytes

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