Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7db586f76bbf86d…

MALICIOUS

PDF

35.0 KB Created: 2020-08-24 17:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cff238701b6f2842806195f6015448a SHA-1: 40c3540f02ab582a4cd445939c72e7c73914de30 SHA-256: b7db586f76bbf86d5a44b8b1ea0db0021e267896a609ae51cc80c318502a121d
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=barter+6+free++sharebeast', points to a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to external content. The primary intent appears to be redirecting users to malicious infrastructure.

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=barter+6+free++sharebeast
    • http://nulan.holytemplec.org/uploads/1/3/0/7/130776321/301983.pdf
    • http://albumbustle.com/leaked-young-thug-barter-6-full-album-downloadhttp://albumbustle
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/80091533633.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/24345823961.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40313354442.pdf
    • https://cdn.shopify.com/s/files/1/0431/2095/1450/files/31344828914.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/arquitectura_renacentista_espaola.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/2143256499.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/61954977229.pdf
    • https://cdn.shopify.com/s/files/1/0451/0354/6533/files/apneia_do_sono_e_obesidade.pdf
    • https://cdn.shopify.com/s/files/1/0431/5342/4540/files/buzenugorutam.pdf
    • https://cdn.shopify.com/s/files/1/0437/2017/9864/files/98545485741.pdf
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/nokemevi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0682/8441/files/29471845579.pdf
    • https://cdn.shopify.com/s/files/1/0435/9304/0029/files/23173448927.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/biomaterials_for_tissue_engineering_applications.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_off00004b81.bin
911a9918338ba814d8d1195a05d8ff9b42b9e876296ea82031a8a26a64ec018f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B81 5164 bytes
font_01_sfnt_off00005d0b.bin
4707c4202ec16ae19d1bd403ac8445dbe36a92bd96ca5ff2786df88fdd9fe285		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0B 10048 bytes

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