Malicious PDF — malware analysis report

Static analysis result for SHA-256 53ecc08b9645ea7d…

MALICIOUS

PDF

46.3 KB Created: 2020-08-22 13:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe7ea3e90e19936dbe9cf9505b99db99 SHA-1: 4a774d24df40c9151cd2c83186f8234e3d462d85 SHA-256: 53ecc08b9645ea7dd567914ff68b5cda62c4e1ccc78fad1d68d3b975c559bf42
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=casey+stoner+pushing+the+limits+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. No scripts were extracted from this sample.

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=casey+stoner+pushing+the+limits+pdf
    • http://zexatub.truthisstrangerthansciencefiction.org/uploads/1/3/2/7/132740405/zevosonepatij-jojugojopaburag.pdf
    • http://files.zsweetsonline.com/uploads/1/3/2/7/132712093/fejivarulajifik.pdf
    • http://mutozopiw.danawensley.com/uploads/1/3/1/6/131606457/6834412.pdf
    • http://files.vontoba.com/uploads/1/3/1/4/131438741/zipunux.pdf
    • http://files.aallformsoflife.com/uploads/1/3/2/6/132680827/gaverixunekorim_rusuzizugojes_mojowetigexasok.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/8844831736.pdf
    • https://cdn.shopify.com/s/files/1/0430/5407/1957/files/avery_label_template_5167_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3774/4552/files/handler_callback_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/2093/4558/files/sofalonuno.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/jisevajodi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/new_york_biennial_report_filing_online.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/tapped_out_cheats_2016.pdf
    • https://cdn.shopify.com/s/files/1/0430/8896/9882/files/67614918814.pdf
    • https://cdn.shopify.com/s/files/1/0433/6068/2139/files/21750739314.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/how_to_uncommit.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/37488144587.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_off00007751.bin
8547b5d51fee094ebd1820fb0ea6f0d20acb077554923ef22ddf1e3cf40f5864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7751 5464 bytes
font_01_sfnt_off000089be.bin
baedde2215c987eabb6a18f9702b95c56ecd95d20891f59337c5713103c78161		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89BE 10208 bytes

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