Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a554282949e7ca…

MALICIOUS

PDF

41.7 KB Created: 2020-08-31 04:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78aebf0eaa1c7e57645a5fc2d4f0e533 SHA-1: a18951c670777a8ade5098e62cfe0023f179dda7 SHA-256: c5a554282949e7ca466fb93677dbb917f79df269866f39da0880ec82e08be303
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 PDF link farm. One of these links, 'https://ttraff.me/wix?keyword=un%2527+goro+crafting+guide', points to known malicious redirector infrastructure. The document body itself is largely unreadable binary data, but the presence of the link farm and the malicious redirector strongly suggests an intent 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.me/wix?keyword=un%2527+goro+crafting+guide
    • https://static.usrfiles.com/ugd/cbdbb6_035ca15a452f4f169b407bb7ebc0777a.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_afee512e439549f69c201aad1041c5bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_598d2ef1033543f6ab62f6f62b077c07.pdf
    • https://static.usrfiles.com/ugd/912de2_6ffaf94259a148688c1314479cd461da.pdf
    • https://static.usrfiles.com/ugd/b8c837_52420dc35d35428d9fabd42195870765.pdf
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/adblock_software_for_chrome_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6288/6549/files/xuronenuja.pdf
    • https://cdn.shopify.com/s/files/1/0436/0352/5794/files/xuvererukazipejakurebig.pdf
    • https://cdn.shopify.com/s/files/1/0430/5210/5881/files/audacity_for_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/8950/9017/files/metformin_pcos_pregnancy_success_rates.pdf
    • https://static.usrfiles.com/ugd/b8c837_2be55c7e8b444c1fa019757a913632e9.pdf
    • https://static.usrfiles.com/ugd/d5415a_f60594e7ff1d40d4a3eec68d25138c88.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_off000064e4.bin
fce0abbcc307c2c897f77a0197f060a144a17ee7c3e10453d79d2ccf07ed475e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E4 5004 bytes
font_01_sfnt_off000075f1.bin
a6c079d39aea269ba86468d62087132d49951ca21a3aa94ebce9bdc1a9b33c45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F1 10728 bytes

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