Malicious PDF — malware analysis report

Static analysis result for SHA-256 86c7bec289b6e4d2…

MALICIOUS

PDF

41.9 KB Created: 2020-09-04 20:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3df26e6b64a78aaf6ec56814914afd1e SHA-1: f7253aa142b68947665b5d30b12471c6fdf65590 SHA-256: 86c7bec289b6e4d2dbcf02db9b64ba0731818287c83bdc5bc0283556fada3e22
128 Risk Score

Malware Insights

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

The PDF contains a link disguised as a beginner's guide for 'Tekken 7 hwoarang beginner guide'. This link, however, redirects to a known malicious domain (ttraff.club). The PDF also contains a large number of links to Shopify-hosted PDFs, likely as part of an SEO spam campaign to mask the malicious redirector. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=tekken+7+hwoarang+beginner+guide
    • https://cdn.shopify.com/s/files/1/0429/1874/0134/files/3d_map_maker_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/4202/9215/files/solo_guitar_tabs.pdf
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/60095960634.pdf
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/array_in_c_language_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9321/files/24939459125.pdf
    • https://cdn.shopify.com/s/files/1/0433/7382/2102/files/97620861022.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/16575145410.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/22669936691.pdf
    • https://static.usrfiles.com/ugd/b8c837_c85030e254444255b28d583e696777d8.pdf
    • https://static.usrfiles.com/ugd/1e52da_03524cb12bf44b30bec67a058e7256d6.pdf
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/lilepuzuwowede.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/nibuxunezikadidabuzipav.pdf
    • https://cdn.shopify.com/s/files/1/0430/2091/0746/files/wipekinaxeji.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/bharat_acharya_8085_microprocessor.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_off00006642.bin
bd19a4b888f76b9adb1fbb0c610cd11604becde2b803d06849ad58578707dc6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6642 5200 bytes
font_01_sfnt_off00007809.bin
9ad699c6e2dda3b61e1bcfc30e31771bc4066b80438518e6f8d99b8ca9216310		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7809 10220 bytes

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