Malicious PDF — malware analysis report

Static analysis result for SHA-256 9831152365be5a40…

MALICIOUS

PDF

40.7 KB Created: 2020-08-07 03:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49f97a7e349da784d4a6dde49436f2fe SHA-1: 1f510abf3510b1d72a6c5bbdad48c93fbd56147e SHA-256: 9831152365be5a40b2ef12b3cadc76ed3039191ca0c9a13a2b6b9b7b6ae73109
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.com/wb?keyword=dividing%20radicals%20worksheet%20answers'. The document body also contains this URL, suggesting the primary intent is to redirect users to malicious sites. 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.com/wb?keyword=dividing%20radicals%20worksheet%20answers
    • http://files.clevelandrelationshiptherapy.com/uploads/1/3/0/8/130873855/81ac23b8ac28.pdf
    • http://files.grandfamilyeyecare.com/uploads/1/3/2/6/132695472/1c5976.pdf
    • http://files.sandyjwells.com/uploads/1/3/2/7/132712080/5537616.pdf
    • http://files.richmondavenueanimalhospital.com/uploads/1/3/0/8/130814676/9610654d01775ef.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/90496827196.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/xobegorabuxinodomujaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/pajilepumigovuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8522/files/lapavavegovak.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/electrical_installation_risk_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/xufemuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/92073756279.pdf
    • https://cdn.shopify.com/s/files/1/0436/5674/1022/files/how_to_setup_epix_admin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/96789150863.pdf
    • https://cdn.shopify.com/s/files/1/0435/4405/1871/files/gugavivefene.pdf
    • https://cdn.shopify.com/s/files/1/0434/9696/4261/files/lenurotut.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_off000060e1.bin
336ce1bf15bf0a530aa84cc07f4443a392ca4913ab9d473f4330d7a30f2677d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E1 5416 bytes
font_01_sfnt_off00007367.bin
e9071e64d7847e011869959a742a84ed1c02b70bd76b2b71113a92caf80e2dbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7367 10100 bytes

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