Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fc841be9da3210…

MALICIOUS

PDF

48.2 KB Created: 2020-08-19 10:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bebda0857ea9b1b1621d8d000431ab81 SHA-1: 07d513da03c9c3127be54d658ce41a897c6f2aba SHA-256: f2fc841be9da3210581a4280cf79e557ecbde793bddf273248e79916ba6ebc7f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier strongly flagged this PDF as malicious. The document body contains text related to 'Keyword research guide 2019' and an embedded URL, suggesting a lure to a malicious site disguised as a resource. The presence of numerous PDF links and a malicious redirector indicates a likely SEO manipulation or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=keyword+research+guide+2019
    • http://files.inspiredemocracy.org/uploads/1/3/2/7/132712093/vaminov.pdf
    • http://lonofipe.woodlinecreations.com/uploads/1/3/1/4/131437532/pewuxurigar_vusate.pdf
    • https://cdn.shopify.com/s/files/1/0438/0291/9074/files/vejapikadilazata.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/adjoin_matriks.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/pdf_ant_colony_optimization_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/zawupad.pdf
    • https://cdn.shopify.com/s/files/1/0435/0207/6070/files/naruto_shippuden_episode_223_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/american_english_file_1_workbook_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0435/9720/1567/files/list_of_companies_in_tamilnadu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2824/0794/files/kentucky_schedule_a_2018_tax_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/zigemopazodeluzobem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdf
    • https://cdn.shopify.com/s/files/1/0431/2956/9434/files/90900001343.pdf
    • https://cdn.shopify.com/s/files/1/0438/7799/0568/files/33169593866.pdf
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/jipalutuna.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6312/files/20058774073.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_off00007d3b.bin
7696c795bf69efabd25db2d22f878f29f9601353f1403272c145721ce6e7b410
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3B 5812 bytes
font_01_sfnt_off00009126.bin
97055fe4986706e8ee1776b033552a30e8325a15cd8d4a5099443bcd8380cd2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9126 10240 bytes