Malicious PDF — malware analysis report

Static analysis result for SHA-256 e98d436fdb55723a…

MALICIOUS

PDF

60.0 KB Created: 2020-08-29 22:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc84737cfe35e0cf186e853942a6dfb2 SHA-1: 6dd34e4c3fad7ba1973ad5ea1a83c959390544fd SHA-256: e98d436fdb55723a38d361481b467021fd801060775f53ac87802626d0eeea37
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is used to lure victims to further malicious sites. The document body, though heavily obfuscated, contains the same URL and keywords related to 'Minecraft', suggesting a lure for potentially malicious downloads or content. The PDF also hosts a large number of external links, many pointing to benign Shopify domains, likely as part of an SEO poisoning or link farm strategy to improve search engine ranking for the malicious URL.

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.club/wix?keyword=minecraft+t%25C3%25BCm+s%25C3%25BCr%25C3%25BCmler+indir
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/pseudoxanthoma_elasticum_case_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8557/files/26892273691.pdf
    • https://cdn.shopify.com/s/files/1/0432/5444/8286/files/xakivajonivudivi.pdf
    • https://static.usrfiles.com/ugd/516574_e9053570c1f440c79d1dee34296a8dc5.pdf
    • https://cdn.shopify.com/s/files/1/0437/3128/8216/files/36706208724.pdf
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/9937787638.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/zolararefi.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d9ff9cda2bc4181aee707072540467a.pdf
    • https://static.usrfiles.com/ugd/b8c837_89deb405e9c14ee8831dc4f28eac3b67.pdf
    • https://static.usrfiles.com/ugd/fd7405_df891e7f137d479cac3fac3583c9338f.pdf
    • https://static.usrfiles.com/ugd/b8c837_17772981c6da43f3936d302466e8daf8.pdf
    • https://static.usrfiles.com/ugd/b65acf_12fc2d3b7d3f48e0bab876ff3d34e721.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_off0000a9e7.bin
435ce76d667d9ababfb70c58562b8677fa6b26076ab4fa6f36484b22ff36e890		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9E7 5292 bytes
font_01_sfnt_off0000bb97.bin
7984f26e68d3cc96f33ff354e2bdd65ed0b9b3cd263ac09da8112216bdb43108		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB97 12072 bytes

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