Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4729eeb6c16f71…

MALICIOUS

PDF

47.6 KB Created: 2020-08-14 23:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b25c084f186ff8e1a783195b2e14160 SHA-1: 39ef1876719b88b3539b8ffca0e3529719c86a1f SHA-256: 2e4729eeb6c16f713d976143a0d97b074fdb89c08fa2f06cccd9e6ea67233d2e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a mass of external links, with one prominent link leading to a known malicious redirector. The document body text, though partially corrupted, includes the text "Lyme disease guidelines ontario" and the URL "https://ttraff.ru/pify?keyword=lyme+disease+guidelines+ontario", suggesting a lure to a malicious site. The presence of numerous other PDF links, many hosted on shopify.com, indicates a link farm strategy. 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/pify?keyword=lyme+disease+guidelines+ontario
    • http://vakilu.wholistichelp.com/uploads/1/3/2/7/132740328/fedejilanusotadi.pdf
    • https://cdn.shopify.com/s/files/1/0451/8585/9735/files/pandoc_html_to_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/south_american_countries_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/52148056852.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/154590649.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/67133171421.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/mosemafovadixad.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/42043045576.pdf
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/vertical_jump_truth.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/basal_body_temperature_chart.pdf
    • https://cdn.shopify.com/s/files/1/0432/5015/5688/files/vizio_direct_tv_code.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/crystal_reports_version_13_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4926/3005/files/36431973764.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufabolip.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_off00006e67.bin
b527be1f61c10018017d17e9daa3cf48d0c4cd76b442738822d41888926c7686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E67 5068 bytes
font_01_sfnt_off00007f92.bin
d89fded12c4f6f0ab02a0fddc34945b1a531f6d8e6e0f80260015da176e41145		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F92 10512 bytes
font_02_sfnt_off0000a380.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA380 4324 bytes

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