Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf61edc6d76cfef…

MALICIOUS

PDF

45.4 KB Created: 2020-08-07 05:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58022ab9b627bf49624b574dc93f82e1 SHA-1: f260ac695e5e98e2452e07373ef5f49740bd77a8 SHA-256: daf61edc6d76cfef06185028cb6f73c05b26cd56e04017dd3381d692e9f1da16
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). This indicates a link farm or redirection attack designed to obscure the final destination. The primary heuristic firing confirms that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics, suggesting it is the intended lure.

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.cc/pify?keyword=agronomy+and+its+scope+pdf
    • http://files.ruralschoolseducation.org/uploads/1/3/0/7/130775997/tupetatawu.pdf
    • http://files.forthesakeofhumanity.com/uploads/1/3/2/6/132695492/0891f60a.pdf
    • http://files.yunkawasiperu.org/uploads/1/3/1/3/131379612/vizarifogumawov.pdf
    • http://dotexij.jdwallace.net/uploads/1/3/1/4/131438137/keliro.pdf
    • http://files.rochesterkino.co.uk/uploads/1/3/1/1/131164002/forixamewowipewuguwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/92565154685.pdf
    • https://cdn.shopify.com/s/files/1/0428/7181/6358/files/toxozagivelujun.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/gv_design_sprint.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/pidijutejasi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/4755316908.pdf
    • https://cdn.shopify.com/s/files/1/0434/5489/0149/files/nenarojinudifejopabavut.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6695/files/43986557423.pdf
    • https://cdn.shopify.com/s/files/1/0440/6948/6757/files/vupumekumujale.pdf
    • https://cdn.shopify.com/s/files/1/0441/3816/8472/files/35209188291.pdf
    • https://cdn.shopify.com/s/files/1/0430/8320/2711/files/venkatrama_telugu_calendar_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/60803808619.pdf
    • https://cdn.shopify.com/s/files/1/0435/3831/7464/files/78211188180.pdf
    • https://cdn.shopify.com/s/files/1/0435/3982/4799/files/wesevisalorakivezuxabodi.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_off00007372.bin
e5cf77e85013a5b24148fe0cc79ba963e147b401718616b6c39134f734f098ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x7372 5536 bytes
font_01_sfnt_off0000863d.bin
0f9427248af7119d14596e852d330fa285c11ae7ef40f01b18ddacb7e8868c7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x863D 9992 bytes