Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9276ca6ba56ad4…

MALICIOUS

PDF

46.6 KB Created: 2020-09-10 00:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a731514bb97b35c049d544926d09f53d SHA-1: 171383c98607146f58f45033ed0b1873a1592ad9 SHA-256: 2e9276ca6ba56ad4ce20c724a20c4fd03c6ebd39fb9bdb969ddbcf4ebe924024
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external links, suggesting a link farm or SEO poisoning attempt. The presence of a visual download button lure further supports the malicious intent. The primary malicious URL is ttraff.link, which redirects to a keyword-related URL. While the document body is heavily obfuscated, it contains the malicious URL and several benign Shopify URLs.

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.link/wix?keyword=online+pdf+watermark+remover+software
    • http://savide.elizajoycesmith.com/uploads/1/3/0/9/130969080/tunol.pdf
    • http://vutori.theartfulclarke.com/uploads/1/3/1/3/131383297/rexabexa-tulitej-veziwawanidepux.pdf
    • http://files.yogawithcarolinesmart.uk/uploads/1/3/0/8/130874658/7648804.pdf
    • http://soxasa.crackwisemag.com/uploads/1/3/2/8/132814930/3508399.pdf
    • http://vuwebuk.sherwoodvalleybandofpomo.com/uploads/1/3/1/4/131406153/b941a536c.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/61153794086.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3584/files/white_outdoors_lawn_mowers.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/xizomunozimelewuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/7605/0330/files/envelope_template_free_ai.pdf
    • https://cdn.shopify.com/s/files/1/0431/3759/7591/files/51784577136.pdf
    • https://cdn.shopify.com/s/files/1/0436/9560/3862/files/dobomaxodogizolo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2759/3376/files/78286530993.pdf
    • https://cdn.shopify.com/s/files/1/0438/9991/2344/files/introduction_to_the_design_and_analysis_of_algorithms_github.pdf
    • https://cdn.shopify.com/s/files/1/0437/1388/8424/files/history_of_anglican_church_in_ghana.pdf
    • https://cdn.shopify.com/s/files/1/0440/4684/4054/files/scanned_to_word_i_love.pdf
    • https://static.usrfiles.com/ugd/b8c837_61e9ac62fda44b49bbb4f0c32d5f05b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad908162b8fe44ed80bf2d3668d8be69.pdf
    • https://static.usrfiles.com/ugd/c068f8_e2de4ac2d02d4d73ae083fd02c1bda40.pdf
    • https://static.usrfiles.com/ugd/764aaa_085fea24aa1146f896bf96d9da3a816a.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cad.bin
e2a93a84e0df9c5263b6f6c3239b32de3d5c0389f33c04f8d76247f987bacf74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAD 5428 bytes
font_01_sfnt_off00007f25.bin
d97e055e11de589539a249dfdf9c15aca1e9caf4700104d1763a3a5d87d8f7f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F25 2320 bytes
font_02_sfnt_off00008977.bin
d05ce04981ea812322fa0985202b79e7744346350d85630df05e0f9d578c0b7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8977 10308 bytes

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