Malicious PDF — malware analysis report

Static analysis result for SHA-256 396749b8b41cc207…

MALICIOUS

PDF

50.9 KB Created: 2020-08-29 15:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 717ebe3a35266ab380829e514f81ffa6 SHA-1: 0234e961672a3dd4ff1e42065585ce6ef510c69f SHA-256: 396749b8b41cc2071e766d7a71d097b480d1684bf1ce7b82fdb1f1e91e24f704
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs. One of these links, 'https://ttraff.com/wix?keyword=cours+sur+les+automatismes+industrie', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination.

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.com/wix?keyword=cours+sur+les+automatismes+industrie
    • https://cdn.shopify.com/s/files/1/0436/9560/3865/files/call_letter_for_job_format.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/18578179863.pdf
    • https://cdn.shopify.com/s/files/1/0431/4005/5208/files/15261844764.pdf
    • https://static.usrfiles.com/ugd/b8c837_9715053a54e94b3b8f940633536883ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_fee1188f28ba414584c039ac96a2247a.pdf
    • https://static.usrfiles.com/ugd/b6edda_2015db672acf47589a13a73ffc081bea.pdf
    • https://static.usrfiles.com/ugd/b8c837_a58955b17278475283872132fe14e640.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ea909af08f64bdaa4c5220f14457c2e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9669b8b0107946d5bfaa1122ed11c891.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d3cc17852454d7e8de1d08a46563404.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2317/files/vewigodabixedufexu.pdf
    • https://cdn.shopify.com/s/files/1/0448/1702/3138/files/america_the_story_of_us_westward_worksheet_answers.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_off000078cd.bin
3bcf4c8b878d243355b460a4080ebe707350dd7a162a1886a5d9dc264698ebe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CD 4876 bytes
font_01_sfnt_off00008946.bin
316b4244c3eae3397fbd161fb931402057781f7f519a223f20dd6fb92adbb7aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8946 12024 bytes
font_02_sfnt_off0000aedc.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDC 4324 bytes

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