Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0d247533fc966a…

MALICIOUS

PDF

48.3 KB Created: 2020-09-01 08:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ad0f3f9529e044a458795e38d56b994 SHA-1: d44193a7b65b2c251e3ab305285d9f27ca867c1b SHA-256: eb0d247533fc966a9c0d1d936dbadfc3ac2e82d0af3ccc5e32c329a2627a8b28
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to contain the same URL, suggesting a lure to a malicious site. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, likely for SEO manipulation or to obscure the malicious redirector.

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.cc/wix?keyword=2+atoms+and+elements+worksheet+answers
    • https://static.usrfiles.com/ugd/a44510_cfd722e0819145db890153106ca6b20a.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c098969beb74625957120feeb0af15d.pdf
    • https://static.usrfiles.com/ugd/822ecd_eec85e8959dd419a9122db0cabca6537.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_b7acc81f6e8449179519d6fd90630d23.pdf
    • https://static.usrfiles.com/ugd/b8c837_65373540caa0459fa6610c8336131adb.pdf
    • https://static.usrfiles.com/ugd/895bef_e5b1c2e2d0f74d82bb8a4ecfafb95de7.pdf
    • https://static.usrfiles.com/ugd/44b221_f272f1cdf26c46dbadbeb032138dbb06.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e1c665a6c0f4ef59084568526fe18b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1a18a5a3042493ca7f82941cbdca950.pdf
    • https://static.usrfiles.com/ugd/b8c837_888f154a98fd4e1bafa54dac2af1c083.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/68182571801.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61053474184.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/gafumefapezogupizodelug.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/depus.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/52378737602.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_off000072e4.bin
73d2aae88e40eccd51aa997edb4571a176c795aad10552b0a75da16595b896e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 5256 bytes
font_01_sfnt_off0000849f.bin
49603737ab36b63d1b0b34823ac032b324f2869e2ee46b2a6cca89c4ef32f6f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x849F 2536 bytes
font_02_sfnt_off00008f82.bin
e1ef0a31e335722a5d3856b4b4d2f2b569797758cb86aa54a738690bde6ca695		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F82 10700 bytes

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