Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d4bd40e98708b4…

MALICIOUS

PDF

66.5 KB Created: 2020-08-30 05:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f2ee18d9eb0cb102e14a95a340b4c9c SHA-1: c13dd47268f52082794be4cfcddeda52494084ee SHA-256: b1d4bd40e98708b4ec92bd06e21a9af0f4fe00c6c5cdea327fd9b751d4f0452f
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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links, many of which are benign but serve to obscure the malicious one. The presence of the malicious URL suggests an attempt to lure users to a compromised or malicious website.

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/wix?keyword=%25D0%25B5%25D1%2582%25D0%25B8%25D1%2587%25D0%25BD%25D1%2596+%25D0%25BF%25D1%2580%25D0%25BE%25D0%25B1%25D0%25BB%25D0%25B5%25D0%25BC%25D0%25B8+%25D0%25B2+%25D0%25BD%25D0%25B0%25D1%2583%25D0%25BA%25D0%25BE%25D0%25B2%25D0%25BE-%25D0%25B4%25D0%25BE%25D1%2581%25D0%25BB%25D1%2596%25D0%25B4%25D0%25BD%25D1%2596%25D0%25B9
    • https://static.usrfiles.com/ugd/1f5cef_fa7f15fc6f684f719bd3e6283d27b413.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa60f998f3ca46a0a3a5118adb8edc6e.pdf
    • https://static.usrfiles.com/ugd/19ce5d_dad3508f1cd64b3ea20bd89cb0ca208b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f64b48ba92745fcb58da6a16f35c53d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9f31b5c000541bf926c45ab92b548a5.pdf
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/warhammer_40k_angels_of_death_supplement.pdf
    • https://cdn.shopify.com/s/files/1/0434/1586/3447/files/85203198515.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/60592424749.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6967/files/processor_speed_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/zemuvimaxo.pdf
    • https://static.usrfiles.com/ugd/162fe6_26ed28f0629b444eb604b92776d9d74e.pdf
    • https://static.usrfiles.com/ugd/a1fb72_0339606b9bfb41ca94879aafe2964ced.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/neuroblastoma_pediatria_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/9243/4339/files/academic_performance_of_working_students.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/50257937104.pdf
    • https://cdn.shopify.com/s/files/1/0440/6912/6309/files/report_abandoned_vehicle_texas.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/lelizusukuzatat.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_off0000ba64.bin
b60a723f801b213ba556b83931353e4670535c67d0654b4d0c8210a773b1e668
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA64 6084 bytes
font_01_sfnt_off0000ce77.bin
07cdffaee6454048a92bba8bf78169f61907d95fd97126b98b992f8612733941
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE77 13544 bytes