Malicious PDF — malware analysis report

Static analysis result for SHA-256 20aee4cc676bbde8…

MALICIOUS

PDF

38.4 KB Created: 2020-08-21 02:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 505a0b3477afa5ce700dc8921bcecf1a SHA-1: 70633409821b6a7e83307bfd0911c607f34d47a3 SHA-256: 20aee4cc676bbde837d76154cd903ea2c4fea0a66b5ae23d1599ed737350a28f
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 at 'https://ttraff.ru/pify?keyword=adobe+illustrator+cs5++windows+7'. This suggests the document is designed to lure users to malicious infrastructure, likely for phishing or malware distribution. The presence of a link farm heuristic further supports the malicious intent of driving traffic to external sites.

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=adobe+illustrator+cs5++windows+7
    • http://files.appalachianflyandyak.com/uploads/1/3/1/3/131382721/gipixexurozuxabaje.pdf
    • http://files.dianashepherd.co.uk/uploads/1/3/0/9/130969818/cdde6898331.pdf
    • http://files.strother-china.com/uploads/1/3/1/8/131856433/dccb610.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/anatomy_of_aorta.pdf
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/kindle_epub_mobi_or.pdf
    • https://cdn.shopify.com/s/files/1/0434/7500/9686/files/basic_unix_commands_for_oracle_dba.pdf
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/92471694732.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/xitibavanakalegerom.pdf
    • https://cdn.shopify.com/s/files/1/0440/3517/8661/files/landscape_design_plans.pdf
    • https://cdn.shopify.com/s/files/1/0439/2294/8251/files/18884315577.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/66841301968.pdf
    • https://cdn.shopify.com/s/files/1/0435/5375/1189/files/sidadevanuxen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/suvobetizilafoja.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xidegafizupewutuzu.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/how_to_play_minecraft_multiplayer.pdf
    • https://cdn.shopify.com/s/files/1/0435/6977/4750/files/muzedo.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_off000058e8.bin
dd26ef14e36fcf3df807982630daed28af8b582952d7b8e656f7090e9a1c37c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E8 5360 bytes
font_01_sfnt_off00006b42.bin
c7459f135fc6210d3a0b4378153130be9bf1530882e3f7d04f153ab5c453bbb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B42 9844 bytes

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