Malicious PDF — malware analysis report

Static analysis result for SHA-256 575070d9a2e16f07…

MALICIOUS

PDF

36.1 KB Created: 2020-08-19 07:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a42aef47a58225ec748f823f7b244cd1 SHA-1: 5d151e09db93e4e726a820d183cd0dc23bc0758a SHA-256: 575070d9a2e16f078b988ccc46f8fe94b97ec30567839cb6e2fc1e4ad84bdcb4
150 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'. This URL is presented within the document body, disguised as a travel guide. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=japan+eyewitness+travel+guide+pdf', which likely serves as a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=japan+eyewitness+travel+guide+pdf
    • http://files.the8thcountdancestudio.com/uploads/1/3/0/8/130813998/kubab-ganubufu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6791/files/97160836871.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/49583129119.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/6546423602.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/accounting_principles_and_conventions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0434/5528/3366/files/bodybuilding_meal_plan_bulking.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9942/files/41573511076.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8067/files/95114282062.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/son_of_ultron_empire.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_off00004fbe.bin
3cfd6ce6d5b21d84d778130c7d295e9fe3e029a1ef818f7e57eb292b92d51223		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FBE 5452 bytes
font_01_sfnt_off0000626f.bin
01bd3931be9154582225ec9c86a3c9df0bff5bcc5cf6a6fe82346d79c862419e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626F 9792 bytes

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