Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f42ef7c7cf684a…

MALICIOUS

PDF

65.1 KB Created: 2020-08-04 15:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 748ee42ce4ec03a3006052f8e90a1e2f SHA-1: 7c58c3fe8c67bb14ce02c7333fd8988755eb3dc9 SHA-256: 25f42ef7c7cf684a2d19905dd390bf00c5081c44d89caddd930c67ab7cd109fa
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=pisagua+alcides+arguedas+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0436/0100/2664/files/20793758838.pdf'. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the intent to redirect the user. 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=pisagua+alcides+arguedas+pdf
    • http://files.robertsiteach.org/uploads/1/3/1/4/131437702/485eaad6737458.pdf
    • http://files.nuamescounseling.com/uploads/1/3/0/8/130874026/menevufamekatapuw.pdf
    • http://files.2020hawaiishirts.com/uploads/1/3/1/8/131857756/4390770.pdf
    • http://files.innovationlabsinc.com/uploads/1/3/1/4/131438501/2ebf62a59272441.pdf
    • http://files.fibrehaus.com/uploads/1/3/1/4/131453432/ramikokobime-kozeturoj-zogapekakepuvip-fekaduji.pdf
    • https://cdn.shopify.com/s/files/1/0436/0100/2664/files/20793758838.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/xinizunirufenaboki.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/36578026551.pdf
    • https://cdn.shopify.com/s/files/1/0436/1447/0302/files/64392193033.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/crimes_of_the_heart_script.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/74953380282.pdf
    • https://cdn.shopify.com/s/files/1/0431/5126/1853/files/voxebatuleteni.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/zodadijebepamafowogazi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/les_anticoagulants_oraux_directs.pdf
    • https://cdn.shopify.com/s/files/1/0434/8379/1526/files/54432447058.pdf
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/58152445759.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_off0000be7a.bin
b33b423c2fdf4307a3dab367296db6a756e56244f2f9b1b31d7f9b9500dd06e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE7A 5324 bytes
font_01_sfnt_off0000d0a6.bin
3d2585f4731ed5306e5df439f6fafb9865804a6553054ac8ee1b506569f039bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A6 11320 bytes