Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2f31475331926b…

MALICIOUS

PDF

41.7 KB Created: 2020-08-12 09:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63537d991e3cc0277b2aafa0e41e748c SHA-1: 8218a3e471900ee6cbeaef0295a52b893764c691 SHA-256: 9d2f31475331926bc0d477abaaa707112814c6e67c630353c9fb3c657ea68ae7
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=l+apocope+en+espagnol+pdf'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to artificially boost search engine rankings or distribute content. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF files hosted on various domains, reinforcing the redirection and potential distribution vector.

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.cc/pify?keyword=l+apocope+en+espagnol+pdf
    • http://files.scottjoplinarchive.org/uploads/1/3/1/6/131637385/5810893.pdf
    • http://files.salonnova.hk/uploads/1/3/1/6/131606060/rovoluropulava.pdf
    • http://files.jalascoaching.com/uploads/1/3/0/8/130873728/bibovuvogadanibazora.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/47956382070.pdf
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/mifisapukek.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/91294407931.pdf
    • https://cdn.shopify.com/s/files/1/0432/4062/0200/files/tazaxogomeronuzotuvim.pdf
    • https://cdn.shopify.com/s/files/1/0428/6359/1583/files/83113489263.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3376/files/46218368011.pdf
    • https://cdn.shopify.com/s/files/1/0433/7028/3173/files/57683222191.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/aishwarya_lakshmi_stotram_in_telugu_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/gifez.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/16537964462.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/gosokujubitedopikoj.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_off000062a2.bin
8be096aadcbddd572f3f1360c32b7bd43da2fc27c742dde1519393a4a4eeda0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 5168 bytes
font_01_sfnt_off00007445.bin
9ae80cd5806c4ce1c8ae20010f8f1911e8470bb0f625481b7bd234bc5548bb17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7445 11548 bytes

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