Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3ab8388ec5e2d1…

MALICIOUS

PDF

47.4 KB Created: 2020-08-15 11:26:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 517a3f8069773ed7b6deaa225720aca3 SHA-1: 6c02aa07486580b857dae48a39a2e4f5f5c0f986 SHA-256: ce3ab8388ec5e2d18a41ee130c37a8a908b6b7931ac437345d1e58e3d39105c1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious infrastructure. The document body, though heavily corrupted, contains the URL that triggered the malicious redirector heuristic, indicating the primary lure. 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/wb?keyword=emerald%20tablets%20isaac%20newton%20pdf
    • http://newijajo.wyevalleycrafts.com/uploads/1/3/2/6/132682646/zazojuvu.pdf
    • http://putige.elizabethhrand.com/uploads/1/3/0/8/130874254/12213.pdf
    • https://cdn.shopify.com/s/files/1/0436/4868/0089/files/synonyms_list_with_urdu_meaning_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/monochrome_laser_printer_test_page.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/advertise_your_discord_server.pdf
    • https://cdn.shopify.com/s/files/1/0433/4531/3941/files/80084469509.pdf
    • https://cdn.shopify.com/s/files/1/0437/7251/0362/files/70820403046.pdf
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/how_to_search_a_scanned_bluebeam.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/hepatitis_c_testing_guidelines_canada.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/wunek.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/34583479616.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/sazefadoparolomaselipo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/topumilafapudifotapos.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_off00007cb5.bin
a2d401c0daead8ddfb9fc09a05b72dd4c3053c124b41f383ced5c975767ef5bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB5 5488 bytes
font_01_sfnt_off00008f4d.bin
1d549acc0405c3129a9d82bf67d21c74d3f2f5ed4006d7879b8077be001ca4c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4D 9860 bytes

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