Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5738636595cb9b9…

MALICIOUS

PDF

39.4 KB Created: 2020-09-03 03:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 488017f4f5061d077e984864c16974a4 SHA-1: 3759b4c9c38d4b70e606c0f20a6734f299b4883f SHA-256: a5738636595cb9b957f737c6750910d89024d6bd795e410df71d3e91674238fe
120 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, which is a common technique for delivering malicious payloads. The document body, though heavily obfuscated, contains the same malicious URL and a list of other URLs, likely part of a link farm to improve search engine ranking and lure unsuspecting users. The primary malicious URL is ttraff.me, which is known for redirecting 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.me/wix?keyword=imagine+dragons+demons+violin+sheet+music
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/veganska_biffar_formbar_frs.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/wiziloluborap.pdf
    • https://cdn.shopify.com/s/files/1/0432/1122/7300/files/jikobasilajoribi.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7b843f1e83749d39fba0c89e809f944.pdf
    • https://static.usrfiles.com/ugd/4ae4db_0d880a248d504ddeb0cf015f93220e12.pdf
    • https://static.usrfiles.com/ugd/cc14e4_fe6e34ea27b54eac8910d4a305c28872.pdf
    • https://static.usrfiles.com/ugd/e73fea_2d1e4ca2f36a46fe9db892252fff53e2.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/hamoodur_rahman_commission_report_in.pdf
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/vegikixofukew.pdf
    • https://cdn.shopify.com/s/files/1/0435/4375/6954/files/62362793215.pdf
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/88969650990.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/get_well_soon_my_love_video.pdf
    • https://cdn.shopify.com/s/files/1/0443/1472/2460/files/connected_cars.pdf
    • https://cdn.shopify.com/s/files/1/0432/8967/3888/files/wajofujevowepanup.pdf
    • https://cdn.shopify.com/s/files/1/0457/8489/1558/files/35861497017.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_off00004def.bin
096d3f059415320d943ab49e1c7988b9b13e90dbc1dee8fd4e2779652071fb8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DEF 5352 bytes
font_01_sfnt_off00005ff5.bin
d09cb8af91a22dbc4b914d50b964ed723e8e54cb588d9b83bbfb3ddfcd4d9dc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 15176 bytes

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