Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ebb69a0dc60f0e2…

MALICIOUS

PDF

41.3 KB Created: 2020-08-30 04:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71d9251848cae77add7dab7fb6d48148 SHA-1: 415265a249d36cd57f9a2406d282f679df53a541 SHA-256: 4ebb69a0dc60f0e2207c46bb3b8c48f7b6f2ca0ea5e90d243b2ed81ca1911760
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 Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the keyword 'antiterrorism scenario training answers' which is also present in the malicious URL, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=antiterrorism+scenario+training+answers
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/55277012575.pdf
    • https://cdn.shopify.com/s/files/1/0439/1567/3752/files/81688825798.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/mexerotula.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/97904585732.pdf
    • https://cdn.shopify.com/s/files/1/0439/2543/8619/files/amharic_mezmur_lyrics.pdf
    • https://static.usrfiles.com/ugd/b8c837_c3627c8100d844888d7e80be0a9117e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f19b026a2444fb8a703bc85c9544f80.pdf
    • https://cdn.shopify.com/s/files/1/0450/4656/2966/files/9763685862.pdf
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/audit_report_qualification_on_going_concern.pdf
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/rosokumodiseguwasegomuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/xezonapofozozaxerax.pdf
    • https://cdn.shopify.com/s/files/1/0433/6753/0655/files/janssen_pharmaceuticals_inc_annual_report.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d1f8fe4a33d46089843b871d05a5bbf.pdf
    • https://static.usrfiles.com/ugd/bae363_751a8161736f43539d001145e29975ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_3776a5ddc8e743ee883cc026ff267536.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_off00006495.bin
f67fac1a87eb879a5a6c94f0e64cdf1715d4ebb8ed3b87abc17988a783797e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 5168 bytes
font_01_sfnt_off0000761d.bin
7bbb164b561c17a6e6affec200ecc171cf8c5cc6a41b67f871929cee8f3f6ffa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x761D 10068 bytes

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