Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf36d4a657bc381…

MALICIOUS

PDF

35.3 KB Created: 2020-08-20 20:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ca39159f95ada24ae0ad21a3e2f7cf1 SHA-1: eedb40abc826d5b5b07aa439846a72fb7135b216 SHA-256: 9bf36d4a657bc3816c8e096e8fc0f813daae5c7945b8e700ebd8fa2fe86827fb
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a BBC weather report and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely to obscure the malicious redirector. The primary intent appears to be social engineering users into visiting the malicious 'ttraff.com' URL.

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=bbc+weather+report+cairo+egypt
    • http://juxovesod.hudsonsteakhouse.co.uk/uploads/1/3/0/9/130969723/tumobu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1999/2222/files/xemuxuzazugidisefefera.pdf
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/sokafonixu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7373/9675/files/28849646330.pdf
    • https://cdn.shopify.com/s/files/1/0431/4012/0733/files/citation_apa_format_website_no_author.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/clipsal_pvc_conduit_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/1426145715.pdf
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/mike_vick_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sobobubujuwin.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/ninusajasojegoxabosiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/4941/0979/files/losilavanekesakumura.pdf
    • https://cdn.shopify.com/s/files/1/0454/2513/1676/files/claiming_reportable_employer_superannuation_contributions.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/nunokasisilimibupow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4758/files/duplicate_artboard_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9730/files/pimujozubalimilaluxupe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9076/3175/files/zevefejivibapujuzelozufop.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_off00004d1e.bin
0a20a1c3e0e8c16e6cccbcb933d22507046b974e6e2d47df074a604c600b48e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D1E 5368 bytes
font_01_sfnt_off00005f6c.bin
b0fe2cff1514b5a6d1e54994b25eea1189d36fa06207bfd0152020f111d4930f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6C 9716 bytes