Malicious PDF — malware analysis report

Static analysis result for SHA-256 76fe1703bb849b6d…

MALICIOUS

PDF

46.5 KB Created: 2020-08-11 02:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8511475a7e359203c21839ecaf2fbc38 SHA-1: b7b31c38a198bc2f763d8fe8c20803c25f3e120f SHA-256: 76fe1703bb849b6d2fb247f667e3e7a373c2dccb8d97b127177642a7b71da5c2
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, likely for SEO manipulation or to distribute malicious links. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further stages of an attack. 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.com/pify?keyword=international+journal+of+bifurcation+and+chaos+pdf
    • http://files.centerschoolpto.com/uploads/1/3/2/6/132681229/nesojuv_ropaj.pdf
    • http://files.colesworldofmathematics.com/uploads/1/3/0/7/130738988/59da8909453.pdf
    • http://files.mwnarchitect.com/uploads/1/3/1/8/131857916/vixekaxuten.pdf
    • http://dokekoso.clonmanygenealogy.com/uploads/1/3/1/4/131407440/vafuwimexo_xetesabuzowek.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/78860641922.pdf
    • https://cdn.shopify.com/s/files/1/0430/8353/0394/files/dibaviranadadafulikowuwaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/verarosuparekiladavib.pdf
    • https://cdn.shopify.com/s/files/1/0437/3970/9589/files/billie_eilish_i_love_you_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/283821937.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/62421963354.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/ketobikulufofegizokot.pdf
    • https://cdn.shopify.com/s/files/1/0436/4877/8400/files/diagnostico_de_anemia_ferropenica_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0429/4737/9356/files/puwajipegelos.pdf
    • https://cdn.shopify.com/s/files/1/0429/6622/0956/files/desobavalusod.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/noradenogegemuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/baguzapaju.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_off00005fcd.bin
0a8a4da6e2989cf50a15471f3a558a9e53d5a4fe9f5ef0f7b32c500257f8b594
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCD 3796 bytes
font_01_sfnt_off00006d2a.bin
e0dc62512c0a90874c8f64764f621036d434b4c0c4806eaf529b8ba05169e6cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2A 5396 bytes
font_02_sfnt_off00007f6f.bin
1a5b56abec012c2ce22c71dd0d39c750ce999a671d49d42eb06f22c293697d4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6F 14284 bytes