Malicious PDF — malware analysis report

Static analysis result for SHA-256 e568b64f31976e3c…

MALICIOUS

PDF

36.2 KB Created: 2020-08-11 19:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ab6589173c3883a186b6c5be9766672 SHA-1: 411450b56dbf267af2300e0fc0204de4e32ef189 SHA-256: e568b64f31976e3c7ea44d404b7792b0de7171aef0f0798f37fa2de6545e8e07
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to 'adding and subtracting fractions guided notes pdf' and the URL itself, suggesting a lure to download or view educational material. The primary malicious link is `https://ttraff.com/pify?keyword=adding+and+subtracting+fractions+guided+notes+pdf`, which likely leads to a further malicious destination.

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=adding+and+subtracting+fractions+guided+notes+pdf
    • http://giwowof.conniedillon.com/uploads/1/3/1/3/131379578/a854a2db5e8be.pdf
    • http://files.redmoonbronxsoapsandteas.com/uploads/1/3/1/3/131379060/fezivekagexin.pdf
    • http://files.weroqfaces.com/uploads/1/3/1/6/131606262/ece256.pdf
    • https://cdn.shopify.com/s/files/1/0439/1786/9211/files/riturexosufejuxuzelaw.pdf
    • https://cdn.shopify.com/s/files/1/0444/3671/7735/files/57637044718.pdf
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/mexinufilaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/design_and_analysis_of_algorithms_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0452/5824/4257/files/catia_training_material.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7126/files/algebra_and_trigonometry_ron_larson_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0439/8150/4670/files/92363423934.pdf
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/98191075914.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/31079270118.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/nemezixu.pdf
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/oxford_discover_4_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/46417824779.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_off00004fa2.bin
f71c4358d2ff8cc1c4f2bd47f939ab47153c9c5c1d814f5dc2c565be4755de27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA2 5420 bytes
font_01_sfnt_off00006210.bin
923fc1b0ee2b3a4cb66e77a2c85f4b249a90855efd1a038c60e69a16c1c5778c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6210 9864 bytes

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