Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63ce97b8f78eecc…

MALICIOUS

PDF

42.3 KB Created: 2020-08-23 18:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e88c555642cb30acf0315ce5e51d668 SHA-1: 7d57130a0328f8177b61bbf39b852291f386ea91 SHA-256: d63ce97b8f78eecc4a96a150c69f1826de567c9d3da1f75dece9704797c35bc7
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious content. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=introductory+agroforestry+pdf, which is flagged as a malicious redirector.

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=introductory+agroforestry+pdf
    • http://files.stchristophersnh.org/uploads/1/3/1/8/131872138/9568713.pdf
    • http://files.beapaige.co.uk/uploads/1/3/1/3/131398504/644370.pdf
    • http://files.aspireimmigration.ca/uploads/1/3/1/4/131409909/gikod.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/gulerujakenarew.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/21393745123.pdf
    • https://cdn.shopify.com/s/files/1/0431/2943/8370/files/bebop_2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5370/files/kreg_saw_guide_vs_track_saw.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/29138292753.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5581/files/midotono.pdf
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/fagatelizinulub.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/mesugodib.pdf
    • https://cdn.shopify.com/s/files/1/0432/3767/1075/files/buvivoxobulutesoguxovase.pdf
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/28598206613.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vaxopegi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/nabudelakepalow.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_off000068cd.bin
21f7175120e1d56da115b529789a95cbcd3a0ff1664c5b541812bcd567e4b1d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68CD 5328 bytes
font_01_sfnt_off00007b04.bin
ab78b1f0bddd7a3492b948a87ab6126dadcc2f778b29482051523da0ce9351c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B04 9832 bytes

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