Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a87ef84b78d5eb…

MALICIOUS

PDF

43.2 KB Created: 2020-08-26 15:31:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a7eec9b89ea264ff3e6f87986ded74a SHA-1: beab7793eb55fd033582787c10d967b21cead3b7 SHA-256: e3a87ef84b78d5ebe2e7ae742ffb3d915f7027fd3cc50d155f98551da1aaf495
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document's purpose is to lure users to malicious sites via a link farm.

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.me/pify?keyword=the+direct+materials+quantity+standa
    • http://kafuvatu.thetastyturntable.com/uploads/1/3/1/3/131379362/6c58c2389214d.pdf
    • http://budew.shop-blace.com/uploads/1/3/1/3/131379179/f6b622d93.pdf
    • http://files.asyapassinsky.com/uploads/1/3/1/4/131453252/ditigipamixete.pdf
    • http://wakekuj.oldlakewoodshop.com/uploads/1/3/2/8/132814930/5fb76.pdf
    • https://cdn.shopify.com/s/files/1/0459/9640/8991/files/tropical_cyclone_weather_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/popipa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3876/7266/files/wopojebipo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/modern_digital_electronics_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/95041972061.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xikosimuzewenox.pdf
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/path_of_the_battlerager.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/46700010159.pdf
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/puleludoxesubikidipo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8886/2622/files/blackberry_android_apps_list.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_off000069a0.bin
e830cf65d2e3a53b8547ff57833740b5a5c977a1cb4d43c7eaf49b1dd695ad0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 5356 bytes
font_01_sfnt_off00007baf.bin
ba00a0343231ac54ba0e147b8456550c79fe2cad50edb0c46f8f0b7da58d1f98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAF 10600 bytes

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