Malicious PDF — malware analysis report

Static analysis result for SHA-256 4077327a04b77f12…

MALICIOUS

PDF

55.0 KB Created: 2020-08-02 01:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ecff1e7fc08411d74126b88826cadf6 SHA-1: 43e6e4c9be47700c259e144febc6dd9951f3b4d8 SHA-256: 4077327a04b77f1288b4acb05c4737acf45b1b76ffe2e6e9d17ca13c78b882f0
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=banjo+tooie+levels'. Another heuristic indicates a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf' being the first listed. The document body, though heavily obfuscated, contains the redirector URL, suggesting a phishing or redirection attempt.

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.ru/pify?keyword=banjo+tooie+levels
    • http://files.writenotions.com/uploads/1/3/1/3/131398323/f48aa45dd.pdf
    • http://files.mtlclownfest.com/uploads/1/3/1/3/131380687/81f780f50.pdf
    • http://files.unitywinterguard.org/uploads/1/3/0/7/130775658/5987968.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/jaxepu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1369814796.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/didajibagumolamodelej.pdf
    • https://cdn.shopify.com/s/files/1/0438/9027/8568/files/93951175800.pdf
    • https://cdn.shopify.com/s/files/1/0446/6461/9171/files/how_to_update_google_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/61518798015.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/beginner_christmas_piano_sheet_music_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3396/0341/files/23135519073.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_off00009cb2.bin
859e3cc9ff0390280511ada606ec28bb560dde103dd0c7d793b4c3101d6f3992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB2 4768 bytes
font_01_sfnt_off0000ad03.bin
42602e0d1f8939200da270d14ffaff8948721bcb8c87ad95055b0221e08c71bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD03 9980 bytes

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