Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f14ca7766eaa29…

MALICIOUS

PDF

53.2 KB Created: 2020-08-24 19:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b16f3730435aa2c9c78ddcd59802f87 SHA-1: 10bf039790b2a72a82e826d3dc8939fc261ed146 SHA-256: a5f14ca7766eaa29bfbee010dc43c43368b7aa51943f5822b0c5e990cbd1a67d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body contains text related to 'Woocommerce one page checkout plugin free', suggesting a lure for users seeking this software. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=woocommerce+one+page+checkout+plugin+free
    • http://files.quickfitkit.com/uploads/1/3/0/7/130776083/litezobokelepa-datom.pdf
    • http://files.mindfuldemocracy.org/uploads/1/3/0/7/130776257/rasot-datugibisakose-kebezijojeva.pdf
    • https://cdn.shopify.com/s/files/1/0435/1826/3464/files/234215140.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7271/files/aecom_logo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/hathway_cable_tv_packages_2020.pdf
    • https://cdn.shopify.com/s/files/1/0465/1519/1958/files/bozizajixijabozixo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/pathophysiology_of_heart_disease_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/speak_now_4_student_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/50958034832.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/pathfinder_bestiary_box_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/5902/5822/files/pajoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/84070763002.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/kusirunumemu.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_off0000912f.bin
94fef27dfd2b20ab41b2b02c14b6650d6c390f4e18fd508cf11b3874b410ebbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x912F 5328 bytes
font_01_sfnt_off0000a32e.bin
5a84c76993d817af5aadb96b2b8fde45d5ed7e2ce1a707819bbee26c3566518d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA32E 10752 bytes

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