Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d591eee02c5fd4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 06:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 575b1bbc789c3f55d1ae689a1aa45a00 SHA-1: 514c4b658a34c0d03d6b4eb1d53cc1bbb8ada6ef SHA-256: e7d591eee02c5fd475f0ba5d94e361ad8d9580120261fdb954fc8a218de8373e
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with one prominent link pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Aaru songs free tamiltunes' and the malicious URL, suggesting a lure for free content. The primary malicious URL is https://ttraff.com/pify?keyword=aaru+songs+free++tamiltunes, which is used to redirect users. The PDF also contains numerous links to other PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content.

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=aaru+songs+free++tamiltunes
    • http://files.hopeanimations.com/uploads/1/3/0/8/130814346/8090035.pdf
    • http://putipej.stmatthiasonline.org/uploads/1/3/0/7/130739980/3656514.pdf
    • http://wesasolin.widgetworkshops.co.uk/uploads/1/3/1/4/131408899/jixozem.pdf
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/math_for_machine_learning_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/kusuxegajokowobej.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/97285098595.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/tatagufasasaxopobu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/19237697644.pdf
    • https://cdn.shopify.com/s/files/1/0435/0204/3288/files/65643627909.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fejatomamegebuwugibuvu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/46176848168.pdf
    • https://cdn.shopify.com/s/files/1/0444/3717/6487/files/company_profile_document_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/1781/3661/files/9164107686.pdf
    • https://cdn.shopify.com/s/files/1/0462/1539/7530/files/wupajapuzoj.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_off00005941.bin
8263b90e65b035a5fce2d27db77ee147faaa97fe3d136e22483623c6886ac0c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5941 5076 bytes
font_01_sfnt_off00006a71.bin
7698e272223b6e99b3115bb3dd5c686ea362bdf9b263f31177dbacdc3b507b5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A71 15212 bytes

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