Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72bcba1eb934f3c…

MALICIOUS

PDF

56.1 KB Created: 2020-07-29 09:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f6f244cb5045a1ed7b59b1991028f84 SHA-1: 12648b06b9bbb0b1eaca65d1a188c34db56897aa SHA-256: e72bcba1eb934f3cff31b436bb78bee9f817fc29ecdbc0baa54ff860c037ef59
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the document is designed to lead users to harmful websites. The 'PDF_SEO_LINK_FARM' heuristic further suggests a mass-generation of links, likely for SEO manipulation or to host phishing content. The document body is heavily obfuscated and unreadable, providing no further context.

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=avionics+tools+pdf
    • http://files.honeyandsagedesigns.com/uploads/1/3/0/7/130775108/soledam-litupekirasim.pdf
    • http://files.techniquemma.com/uploads/1/3/0/7/130739202/96c4f1ef86812.pdf
    • http://files.michaelbutlerbrown.com/uploads/1/3/1/3/131379990/xizekupixana.pdf
    • http://files.en.oslomamma.net/uploads/1/3/1/6/131637889/xeligaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/litosewatamezivovi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/ralelugalis.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/91106021931.pdf
    • https://cdn.shopify.com/s/files/1/0435/2645/5455/files/19393393606.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jivanup.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/36882342549.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/detewilij.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/11428799560.pdf
    • https://cdn.shopify.com/s/files/1/0438/4689/3730/files/91915524418.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/sudonikariwiwolapajerikuw.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/
    • https://cdn.shopify.com/s/files/1/0435/2645/5455

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f3d.bin
9b25a2eeb1309a8eba56a80fdc88c1a45401df68ef6dd3d9e70c3627a317fc63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3D 4564 bytes
font_01_sfnt_off00009ecf.bin
2b838e56a62e090a88dd50c13fb1bddb87372211f18e19e1b9e79ccb286b29b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECF 16708 bytes

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