Malicious PDF — malware analysis report

Static analysis result for SHA-256 923e657f6e7eac8e…

MALICIOUS

PDF

49.1 KB Created: 2020-08-09 10:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bd93185dbe07cab9bd75e8f0a47f329 SHA-1: cd69b5f4ad981345f8b47e6e2a16507819362edb SHA-256: 923e657f6e7eac8e78a648c4d642b727adfef37fa0368dc402b39d6fa44c4326
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'inventory management pdf' and the URL 'https://ttraff.cc/pify?keyword=define+inventory+management+pdf', suggesting a lure to a malicious site. The presence of a link farm further indicates an attempt to manipulate search engine results or distribute malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=define+inventory+management+pdf
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
    • http://files.beautifulnapatours.com/uploads/1/3/2/8/132814900/gusezoligatotiwepada.pdf
    • http://files.cmitelementarypto.com/uploads/1/3/0/8/130874495/15f30f9f.pdf
    • http://torodig.lauramckaigpt.com/uploads/1/3/0/8/130814328/9124186.pdf
    • http://fufuwi.ironmartialartsonline.com/uploads/1/3/0/8/130815017/5353836.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/madagojekibujijunatojedo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/japan_fighting_games.pdf
    • https://cdn.shopify.com/s/files/1/0429/2896/3747/files/21612084305.pdf
    • https://cdn.shopify.com/s/files/1/0435/2904/4127/files/body_parts_esl.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/66407053057.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/9100173822.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/zigoki.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/76273136888.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/26216857550.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/business_english_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/40577030184.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8735/files/42400873938.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/namiruvebe.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_off00008157.bin
9a8321aa6e0689ac8b323a082965c56c56470755c954d382a32501658dc59487
pdf-font-stream PDF embedded font (sfnt) at offset 0x8157 5312 bytes
font_01_sfnt_off0000936d.bin
6dd582556d446edfec8fa916ad12bba009380ee2edee4688de0e2140b9376ca7
pdf-font-stream PDF embedded font (sfnt) at offset 0x936D 10364 bytes