Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f36965e84e13fb…

MALICIOUS

PDF

61.3 KB Created: 2020-08-30 13:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af4211ab5b375a98fd0fcdd7362b84ae SHA-1: a02cc029aec8412ac6f2989069397d9144d01531 SHA-256: 99f36965e84e13fb5519f9d60537443ec3dbf352f2e9ce512adbe801eed65e47
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=poe+lab+merciless', which is flagged as a malicious redirector. The presence of numerous other links, many hosted on Shopify, suggests a link farm or redirection strategy to obscure the final destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=poe+lab+merciless
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/datavudafumolitazatun.pdf
    • https://cdn.shopify.com/s/files/1/0436/0008/5160/files/8769497521.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/fazaxisodekinibexeti.pdf
    • https://cdn.shopify.com/s/files/1/0435/6793/9743/files/jodobavex.pdf
    • https://cdn.shopify.com/s/files/1/0438/4319/0944/files/fnaf_4_halloween_edition_download_pc.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/vegogunojogosena.pdf
    • https://static.usrfiles.com/ugd/b8c837_4599b1e1f34d4d9885625c493d52c647.pdf
    • https://static.usrfiles.com/ugd/b8c837_c575e52dff6f467181dd5c68f6159dc2.pdf
    • https://cdn.shopify.com/s/files/1/0441/2227/5992/files/warrior_pre_raid_bis_classic.pdf
    • https://cdn.shopify.com/s/files/1/0438/0858/7938/files/atticus_finch_closing_argument.pdf
    • https://cdn.shopify.com/s/files/1/0431/9192/6948/files/instagram_stories_templates_highlights.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_off0000b283.bin
5724d6c18aadba05d0a942be5c91789c24614732227559ea42e8f285cbb4adf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB283 5084 bytes
font_01_sfnt_off0000c3b4.bin
070aa0aeda023d017bcb8e1c66b0f444b6cb997c6ea8a906907a95b859316b62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B4 10816 bytes

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