Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f664858b963a01…

MALICIOUS

PDF

39.9 KB Created: 2020-08-05 02:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2938a9511c2f3a11d709d02a1fc51659 SHA-1: 766ddf644ded3fdb347d1674fe83ded973172920 SHA-256: 53f664858b963a01f20f6052a0b565509f11a4813c770023eaa6480f13c8b182
130 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, 'https://ttraff.com/pify?keyword=pdf+to+dwg+online+without+email', which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a lure to a malicious site. The presence of a download button heuristic further supports the social engineering aspect of this attack.

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=pdf+to+dwg+online+without+email
    • http://files.dud-bud.com/uploads/1/3/1/4/131438274/werafigubogew_kagejanu_jokijozidasujo.pdf
    • http://files.ballinasloe.coralleisure.ie/uploads/1/3/0/9/130969331/xukisi.pdf
    • http://files.executive-advocate.com/uploads/1/3/1/3/131379321/a73eb63e8d82.pdf
    • http://kipajix.digitalbankinginnovationapac.fintecnet.com/uploads/1/3/1/4/131453870/1613802.pdf
    • http://files.tribranch.org/uploads/1/3/1/8/131856374/176229.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xefafozerokadugatevaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21617342462.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/jixamojodegoraruburip.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/bajer.pdf
    • https://cdn.shopify.com/s/files/1/0430/1442/2687/files/zoromupo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78682713185.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/xikapusapasemam.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/wadimibunojisosuxitufulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/lupigokajo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/81956961780.pdf
    • https://cdn.shopify.com/s/files/1/0439/1917/9931/files/bepijufozesef.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_off00005db7.bin
9dd0e8148e4a11514addd0ce2368b41d1963689b2822c7c73d7160f66afe7b0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB7 5140 bytes
font_01_sfnt_off00006f22.bin
ab280a3bef7a44ed059a2b306c736f962ccfc0100d79b486abbf449a1e542da1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F22 10428 bytes