Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db8b822b51329b8…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 01:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 410402f2cb87c2c66874001b889681c6 SHA-1: 88a6b1a53407e520941ac671ddada11e5d41ad66 SHA-256: 9db8b822b51329b8854b49a82afbea210cc9a01c660cda7c134e7db4bdc8514b
120 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'. It also exhibits characteristics of an SEO link farm, embedding numerous links, many hosted on Shopify, to obscure its true purpose. The document body, though heavily obfuscated, contains the malicious URL and text suggesting a lure related to a movie, likely to entice clicks. The primary malicious IOC is the redirector URL.

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=life+is+beautiful+full+movie+songs
    • http://files.atulyakbingham.com/uploads/1/3/1/0/131070434/nepufef_jujudi_suragulosalu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9800/4899/files/subnautica_vertical_connector.pdf
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/common_core_math_standards_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/5091839374.pdf
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/monumeb.pdf
    • https://cdn.shopify.com/s/files/1/0438/1193/0274/files/vipitiloguriresitakok.pdf
    • https://cdn.shopify.com/s/files/1/0428/0808/2598/files/cartrophen_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/46186704197.pdf
    • https://cdn.shopify.com/s/files/1/0430/9791/5545/files/volozezatod.pdf
    • https://cdn.shopify.com/s/files/1/0429/9105/9097/files/bomasepifexakixegofu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5292/files/morphology_of_plants_and_fungi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/56354037797.pdf
    • https://cdn.shopify.com/s/files/1/0433/8414/4037/files/aadhar_card_update_status_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1384/files/kogebavogimuzidumomaxo.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_off00006a48.bin
c849b04ebc16a63a877da0db9c301d5cea949971eb2d7b413c41034f2ef3a320		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A48 5132 bytes
font_01_sfnt_off00007bc0.bin
79237f631c752c64206335c4e8a2aa7183b26b19e5bc1dbb95f16b0ce7ff880b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC0 10448 bytes

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