Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d7249f3073ab273…

MALICIOUS

PDF

43.7 KB Created: 2020-08-12 08:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 767f35e8388896e76f0bda9e5c43f7ed SHA-1: 88b1ecb34bac9fe7b1b17b0d01c67bc999f46bbe SHA-256: 8d7249f3073ab273b7a018e95cdf32dc6688df254b1a6cc38431115dff2e258c
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is designed to lure users with a fake offer for free PDF editing software. The document body, though heavily obfuscated, contains text related to editing PDFs and the redirector URL itself. The presence of a malicious redirector strongly suggests a phishing or social engineering attack aimed at driving traffic to malicious 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.com/pify?keyword=edit+pdfs+for+free+windows
    • http://files.livingskiesfibrestudio.com/uploads/1/3/2/6/132682610/2370ee29d40fb7a.pdf
    • http://vavoto.portfolio-people.com/uploads/1/3/0/8/130873951/sozapativaxebo.pdf
    • http://files.keithdeininger.com/uploads/1/3/2/7/132740586/3554665.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5187/files/nuclear_physics_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/27090311022.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/6138392178.pdf
    • https://cdn.shopify.com/s/files/1/0433/8434/0630/files/zenuvonotibelebulasok.pdf
    • https://cdn.shopify.com/s/files/1/0432/7214/3001/files/acrobat_pro_vselement.pdf
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/dd-_wrt_ipv6.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/tonobato.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/roporetajapulonapevi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/57640200283.pdf
    • https://cdn.shopify.com/s/files/1/0435/5185/0647/files/suspicious_minds_book.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_off00006dd9.bin
7064e0967547e7b38cd78bc3b130a56648c3449d05200df00c68e70562e34d81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD9 4844 bytes
font_01_sfnt_off00007e79.bin
1405ecc0a6f0ca7db127c119335c54e015ec1b60918877c765df86dfe27db358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E79 10364 bytes

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