Malicious PDF — malware analysis report

Static analysis result for SHA-256 da255b44da06dafd…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 07:56:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c6eba2380808255a391f6737632afa6 SHA-1: 70c2cd48225e58bd8e23c3bdbd1bd1ad346c099c SHA-256: da255b44da06dafd7b145a907ba8506c6eca2270b98aeb6124c8ff177d4b5f8d
120 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger network of linked documents, likely for SEO poisoning or traffic generation. 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.cc/pify?keyword=hack+wifi+wps+android+apk
    • http://files.meadowcovehoa.com/uploads/1/3/1/4/131453370/0e6ae82dbcf6b.pdf
    • http://files.wellnessthroughthearts.com/uploads/1/3/1/6/131606035/b8e3e36d9eb287.pdf
    • http://pezoz.gochamber.org/uploads/1/3/2/8/132814337/jufenamadotiv.pdf
    • http://jobomolax.bigdoglabradoodles.com/uploads/1/3/1/4/131454065/riretu.pdf
    • http://files.gretchenhasclass.com/uploads/1/3/0/8/130874457/vemezekonud-deduweponisudu-wutipazakiruwi-xokakepusiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1484/8671/files/39074818266.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/33691841045.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/mizesawisep.pdf
    • https://cdn.shopify.com/s/files/1/0452/7321/9234/files/yii2_framework_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0434/0314/9477/files/79016356306.pdf
    • https://cdn.shopify.com/s/files/1/0437/4501/8017/files/kamapitosulako.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4080/files/9896768963.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/dubefep.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1868/files/69435715755.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_off00006e3e.bin
de0d3c093e89161b7d1992696877fe078d5e24d93f6684adee057e797fc342a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3E 5232 bytes
font_01_sfnt_off00008027.bin
7b89f304c48409b71a542cd049c974a525c6c7cf2b2f28ea41991ccbc88e23fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8027 10440 bytes

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