Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e06f7e211bbe9b…

MALICIOUS

PDF

43.6 KB Created: 2020-07-21 20:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b40b705b03d6d2e25d9db9d1ef072aba SHA-1: 819c4cec0b1e903b3fcbae7959ec8cde2d596d93 SHA-256: 86e06f7e211bbe9b59d5f284f6d05f17e0111164c27e73fc7044b6f453b01513
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on Shopify. One of these links, however, redirects to `ttraff.ru`, which is identified as known malicious redirector infrastructure. This suggests a campaign to drive traffic to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=suffix+worksheets+middle+school+pdf
    • http://files.jadesoapshop.com/uploads/1/3/0/9/130969551/fuxudigu-zibunoguvekit-gajafan.pdf
    • http://files.craftyfoxstudio.com/uploads/1/3/1/4/131437516/mafubojiwowezitewe.pdf
    • http://files.teachingandlearningwell.com/uploads/1/3/2/7/132712508/pazez_sesijuwe_davetabofegurud_wefotakovolukos.pdf
    • http://files.mixfruitonline.com/uploads/1/3/1/8/131856456/43b2a75a3a.pdf
    • http://files.stmattsschoolcampbellsport.com/uploads/1/3/0/9/130969923/vemozutozapozesabaku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pobilimej.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/68004644678.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13652925252.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/xoxozitixerotani.pdf
    • https://cdn.shopify.com/s/files/1/0434/3349/2641/files/bawijonutozakigijufunafus.pdf
    • https://ribixobu.files.wordpress.com/2020/06/luvomowirakal.pdf
    • https://metiwelujipe.files.wordpress.com/2020/06/mamojoni.pdf
    • https://lufolifijon.files.wordpress.com/2020/06/46576597679.pdf
    • https://fatafujuk.files.wordpress.com/2020/06/92892508714.pdf
    • https://binepefase.files.wordpress.com/2020/06/45488098263.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8102/files/54812216044.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36283751979.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/31728029075.pdf
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/ralivixefejosuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8263/files/zujifalopales.pdf
    • https://cdn.shopify.com/s/files/1/0428/6945/7063/files/daxutami.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_off00006d0b.bin
3b8668fbc9a7d71ab9eed57c843ba46e466a7a44176f5a2b44fc0431624cb3d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0B 5288 bytes
font_01_sfnt_off00007f26.bin
1cc216ccd84088b350696d54cee691be494bd00477df26af112ed590ccfa1b0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F26 9828 bytes