Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fda9275ecc7e0d5…

MALICIOUS

PDF

43.0 KB Created: 2020-08-16 22:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8970e1300ab9c428efd7077975656b9f SHA-1: f5b22a3d17b4e8ff0607705489677001f04ef1c5 SHA-256: 7fda9275ecc7e0d56c9182f7a47a604bfdfb5975e1ea26bf2442c7528469af3c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=company+structure+template+word'. This URL is presented within the document body, disguised as a 'company structure template word'. The file also exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com. The primary malicious URL is the most significant IOC.

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=company+structure+template+word
    • http://files.radcliffchristianchurch.com/uploads/1/3/0/8/130813979/jagoka-sirerijuxobu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6798/1474/files/cerament_bone_void_filler.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/dupasa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/76563127361.pdf
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/coordinate_plane_worksheets_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7266/files/26443984941.pdf
    • https://cdn.shopify.com/s/files/1/0437/6202/4605/files/greatest_common_factor_and_least_common_multiple_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/cambridge_advanced_learner_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/27169652571.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/nuwop.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/48452443877.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/celine_dion_biography.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_off00006a07.bin
f79bbb066070b230d8bcb8503bb1560c572141ea3bedb9b014136415caac4b55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A07 5316 bytes
font_01_sfnt_off00007c0f.bin
95d4ffcc16d6f79098c3844214425e9b7773c59a6588dc43156e60eb653e1734		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0F 10160 bytes

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