Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ae4680569e627a…

MALICIOUS

PDF

41.6 KB Created: 2020-08-15 00:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf84f53d0844f656b5fd706b729a722a SHA-1: 90c89bcf2a71d31febb1e4ce6dc9d0cc296501cb SHA-256: e9ae4680569e627a5719d86f1bab59b0303a4e88797ce458d500573773805e35
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com, which is used in a lure for '3ds max material library free'. The document also exhibits a PDF link farm heuristic, indicating a large number of outbound links, many hosted on Shopify. The presence of a 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be intended to trick users into believing they need a password for an archive, a common tactic to bypass gateway security.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/pify?keyword=3ds+max+material+library++free
    • http://files.prairiegreen.org/uploads/1/3/1/3/131380558/4141097.pdf
    • http://files.molyneauxlawfirm.com/uploads/1/3/1/1/131163872/4252963.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/32830942779.pdf
    • https://cdn.shopify.com/s/files/1/0435/9471/1203/files/pandas_save_dataframe_to_csv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/8942390077.pdf
    • https://cdn.shopify.com/s/files/1/0437/3925/0853/files/94078194365.pdf
    • https://cdn.shopify.com/s/files/1/0429/5727/5299/files/xefokizox.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/soxajidigotugawiwafovusu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/network_analysis_with_applications_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/74170143104.pdf
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/88964256383.pdf
    • https://cdn.shopify.com/s/files/1/0441/3269/6216/files/dudipujusiweve.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/94252507278.pdf
    • https://cdn.shopify.com/s/files/1/0432/1473/3480/files/54707708468.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_off000064b6.bin
8085905d78a46287fd35ed93dbf77cba7396fabcaa73ff908fab589bb208d853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 5432 bytes
font_01_sfnt_off0000771b.bin
319bfa8c7596c0e995ef12b7aab25bebda788f98569be4f8cbbd8cb6f7c7113f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x771B 9968 bytes

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