Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d405ddcb3b5e84c…

MALICIOUS

PDF

56.3 KB Created: 2020-08-13 11:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b7bfb9a4d256b883d374689da3ea89e SHA-1: 7c2099221e5e306ba03e6a2b07f12ebebfd349a1 SHA-256: 4d405ddcb3b5e84cb2be6a49da4507cd2517e37581126fba1312ac5b4675d4d8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wb?keyword=nuance%20power%20pdf%20standard%20advanced%20vergleich'. This indicates the document's primary purpose is to lure the user to a malicious site. The presence of numerous other links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility of the malicious redirector. No scripts were extracted, but the embedded URLs are sufficient to determine the malicious intent.

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=nuance%20power%20pdf%20standard%20advanced%20vergleich
    • http://files.floridaflightsolutions.com/uploads/1/3/1/3/131381480/mogabopujomirewafu.pdf
    • http://files.dcsuniversal.com/uploads/1/3/1/4/131408131/e7e019dc6f8d6.pdf
    • http://tabetixa.gsm-eu.com/uploads/1/3/0/8/130874359/pegoradogud.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0735/files/99761029412.pdf
    • https://cdn.shopify.com/s/files/1/0431/1977/1799/files/fedevan.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4204/files/ufc_208_live_stream_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/3767/0041/files/67829634834.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4702/files/westworld_pilot_script.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/chemistry_textbook_class_12_gseb.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/barron_s_us_history_regents_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/crossword_puzzles_for_middle_schoolers.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/15973096353.pdf
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/62289391762.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_off00009933.bin
0f245d050e60d665770cecdde1cc4ea37afcecd6c11a4d0c81cc7fcbc97a3c4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9933 5540 bytes
font_01_sfnt_off0000ac16.bin
8cf0a4eb485c543ec17371bec5f360d0aa21a1f999062b73effb72923ea71196		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC16 11992 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.