Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b66181e6a2bc2f7…

MALICIOUS

PDF

41.3 KB Created: 2020-07-31 21:29:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b340b95c1b1934915fb3904fec9f2ce SHA-1: 5454de90e471bac490433c479e3895924f8d278d SHA-256: 8b66181e6a2bc2f77d549cdeac32a48ee7bc09e88aa740188cce04eb6a75c60a
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body and embedded links also indicate a link farm strategy, with numerous Shopify URLs, likely intended to obscure the malicious redirector. The primary malicious URL is 'https://ttraff.com/pify?keyword=underworld+meg+cabot+pdf+free+download', which is presented as a free download lure.

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.com/pify?keyword=underworld+meg+cabot+pdf+free+download
    • http://files.brandonbarrowscomics.com/uploads/1/3/1/3/131383398/laxowitupizovexuw.pdf
    • http://files.myhillchurch.com/uploads/1/3/1/4/131453255/xujirirufixi-nojulotex-pefitepobajose-wexama.pdf
    • http://files.emteacher.com/uploads/1/3/1/4/131411199/vugomokaxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/gilibipe.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/pirofoliganinariramogugew.pdf
    • https://cdn.shopify.com/s/files/1/0432/3501/6863/files/guliso.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4968/files/25841702141.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/35362857853.pdf
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/68533251135.pdf
    • https://cdn.shopify.com/s/files/1/0439/1406/8123/files/dinejusud.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/96191048371.pdf
    • https://cdn.shopify.com/s/files/1/0428/7011/2423/files/17993059219.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xasaxikopakepiditewevumub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.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_off000060d2.bin
665ca4e18e893b59fb758ba24af1b27993c4fe8fa226fe178453f0036d497548		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 5520 bytes
font_01_sfnt_off00007395.bin
443d1bf4838a0250b70e0ee1202e7975dbd542979157bf306a10d79c459f7e7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7395 10740 bytes

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