Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda5fcd456770d3a…

MALICIOUS

PDF

56.1 KB Created: 2020-08-23 09:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78c50859ec7f49e9031280ce2d8105e2 SHA-1: 772dd8e1384996ec5655bdae3b71e44b8d87c71e SHA-256: dda5fcd456770d3a0b8199cb7f75c87344b67a844fc5e3eace11cd137bff60a9
120 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 Shopify domains hosting other PDFs, suggesting a link farm designed to obscure malicious activity. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body contains garbled text but also includes the malicious redirector URL and several Shopify URLs.

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.com/pify?keyword=mats+knutsson+reporter
    • http://files.disorderly-thoughts.com/uploads/1/3/0/8/130874154/xozadodim_gawujeretefavun.pdf
    • http://files.hawkecreations.com/uploads/1/3/1/3/131379748/6603715.pdf
    • http://supiwon.the-nature-atelier.com/uploads/1/3/2/6/132682974/takotobabi.pdf
    • http://duwena.barrosfitness.com/uploads/1/3/1/8/131856124/rodujobu.pdf
    • http://nixuv.charlottesvillejtt.com/uploads/1/3/2/6/132681337/94c50f7a.pdf
    • https://cdn.shopify.com/s/files/1/0435/6525/2769/files/ijazat_song_mp4_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdf
    • https://cdn.shopify.com/s/files/1/0438/9001/6424/files/website_design_assignment.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/55477908476.pdf
    • https://cdn.shopify.com/s/files/1/0437/5710/9399/files/94512406394.pdf
    • https://cdn.shopify.com/s/files/1/0437/0631/9002/files/kividonojir.pdf
    • https://cdn.shopify.com/s/files/1/0463/0672/1957/files/section_375_box_office_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/4655/8106/files/dryer_sheets_mice_car.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/finodoreguxajujakitofi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7945/1295/files/49622577688.pdf
    • https://cdn.shopify.com/s/files/1/0464/7868/8408/files/applicant_s_guide_hrto.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutiga.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/95276488906.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008997.bin
946e3446ec6498370ef35704f1e69a962e7cfd00783a791aac888922bf88a863
pdf-font-stream PDF embedded font (sfnt) at offset 0x8997 4848 bytes
font_01_sfnt_off00009a27.bin
52a0f90192e219665af4dc722a3d9a1aa6c8f236f26e791a27fa1c199f0dd537
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A27 10448 bytes
font_02_sfnt_off0000be17.bin
9d161d6e34f835aff196e226d852edde4d65b072a4902c32411b177d8c29261e
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE17 16076 bytes