Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4264068c216a143…

MALICIOUS

PDF

44.0 KB Created: 2020-08-08 01:57:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b2830db787cf359c16a990e7f11c3c6 SHA-1: f65d7d4783c907d4e61bed29f1a725538b41cff1 SHA-256: c4264068c216a143a588f3b648938171b37e0100747c88769bf69d05a3529644
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. The presence of numerous SEO-optimized PDF links indicates a likely attempt to game search engine results for visibility.

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.ru/pify?keyword=redmi+airdots+manual+english+pdf
    • http://wubak.biblestudynotes.net/uploads/1/3/0/8/130814297/kudilozulipetev-nudawum-zizufefega.pdf
    • http://files.glambyjac.com/uploads/1/3/0/8/130814297/jipilo_dutununu.pdf
    • http://xebalige.laralindphoto.com/uploads/1/3/1/6/131636612/zaxafixa_pavukevena_nabovexogije_gojimoguz.pdf
    • http://files.scamwatchphilippines.com/uploads/1/3/2/7/132740930/3026909.pdf
    • http://vexeno.elevensixteenstudioco.com/uploads/1/3/1/3/131383949/18f1df1fec.pdf
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/83892420525.pdf
    • https://cdn.shopify.com/s/files/1/0437/4783/6058/files/48133609761.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13164506765.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/dopisewod.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/zomomokezefufodipoz.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/safewegexofelu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/35290557970.pdf
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/1898376091.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/fishing_pond_stardew.pdf
    • https://cdn.shopify.com/s/files/1/0436/2797/0718/files/can_you_download_netflix_movies_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76106621034.pdf
    • https://cdn.shopify.com/s/files/1/0447/8684/3799/files/buffalo_wild_wings_menu_calories.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3820/files/4389365592.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_off00006de3.bin
5369d3849ef45d240e922787726491fba743db863a0a3cb45b971a521812e89e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE3 5464 bytes
font_01_sfnt_off0000804b.bin
6fd3cf254528405001a1f2a3c4b4fa39dabf13d3b0ba5c9e156106da2f470796
pdf-font-stream PDF embedded font (sfnt) at offset 0x804B 10224 bytes