Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5927007f6b2684e…

MALICIOUS

PDF

40.0 KB Created: 2020-09-18 08:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a8f625067e54695a4aa0572e6b2ad60 SHA-1: 5df995e4b8038d76a1dfe9bd54b0295a1f7a2981 SHA-256: b5927007f6b2684efc497ecf7c618c519e18b0e8618abd6885aabbe0a3a9e90a
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, many of which point to suspicious domains and are likely part of a link farm designed to redirect users to malicious content. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector link, suggesting a deliberate attempt to lure users to potentially harmful sites.

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.club/wix?keyword=matter+and+energy+crossword+puzzle+answers
    • http://bemonomoz.jbhealth.co.uk/uploads/1/3/2/6/132695351/8456457.pdf
    • http://dasomemiw.mdlashesllc.com/uploads/1/3/2/7/132741508/xevekebem_suwurediju.pdf
    • http://files.shawngrewal.com/uploads/1/3/0/7/130775653/c3a6276.pdf
    • http://sufovidu.andovertownhouse.com/uploads/1/3/2/6/132695454/lekevamoseninude.pdf
    • https://cdn.shopify.com/s/files/1/0437/8954/9726/files/vubedesuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/kupilemajezasurofinabofi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/29826546809.pdf
    • https://cdn.shopify.com/s/files/1/0433/8017/9095/files/thetruthspy_gold_apk_download.pdf
    • https://220d0dd3-de22-4ae8-b72b-577d50f14bad.filesusr.com/ugd/0ebc1f_885d0de1b0904418a319b726b6c5e502.pdf?index=true
    • https://3285dd12-0dd9-4a26-893c-90dcdc49d99e.filesusr.com/ugd/1e52da_6b30d504b16a4bbb98f021cfa9095856.pdf?index=true
    • https://0327fb6f-988e-4e1b-ba9c-c673a9ac68d5.filesusr.com/ugd/dec231_51649ef611654a409702405fc6f1a47b.pdf?index=true
    • https://27c95fae-e24b-4d06-abd6-830fd29420e4.filesusr.com/ugd/5b1e3c_a59127151f0d4651a98157b2b41c9d15.pdf?index=true
    • https://a388b139-f6e0-4ca0-8935-bbce6ca40fcc.filesusr.com/ugd/974a4e_d5e5139f49f94683a41ef1ba4b275f36.pdf?index=true
    • https://7f4bac24-5e9b-490f-9713-b397273a25e9.filesusr.com/ugd/3ce946_8fa1ed32e2c34528b91eee6d2cceeace.pdf?index=true
    • 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_off00005da7.bin
89ccd5598efd5e1275569404df63d22cc441f0d296f924a9597c57c5f443d783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA7 5488 bytes
font_01_sfnt_off00007090.bin
b312aaad2945f534dbd8d58f864c681f88600d62fd89bfc25d0d0c383f0f19e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7090 10024 bytes

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