Malicious PDF — malware analysis report

Static analysis result for SHA-256 31725d776dd7b6d3…

MALICIOUS

PDF

49.0 KB Created: 2020-08-29 19:50:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94be69ac01deb9363282b3852786b7ca SHA-1: 59d7b86cdd4fa3cc1413f4d75a84e6d75d1165f4 SHA-256: 31725d776dd7b6d38750713848580ff6be25cfa09fb3ac9d5cc52edbd702e034
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 'https://ttraff.com/wix?keyword=dursun+ali+erzincanl%25C4%25B1+gelseydin+fon+m%25C3%25BCzi%25C4%259Fi'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with 'https://static.usrfiles.com/ugd/b8c837_48d132b8992940a8b6dfd096f1126b78.pdf' being the first identified. No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or social engineering attempt to lead the user to a malicious site.

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=dursun+ali+erzincanl%25C4%25B1+gelseydin+fon+m%25C3%25BCzi%25C4%259Fi
    • https://static.usrfiles.com/ugd/b8c837_48d132b8992940a8b6dfd096f1126b78.pdf
    • https://static.usrfiles.com/ugd/b8c837_43d326701a3c4bb5a17399780abaeaf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5a42b1e2bd64bd5809fbedd7ab6d539.pdf
    • https://static.usrfiles.com/ugd/b8c837_57667f8d80424d4aac21d0cdd7d0039f.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6a3ec104de940039daacf2f0f0ef7af.pdf
    • https://static.usrfiles.com/ugd/ecec20_e0616b257c60406a8e7eead8b6802e35.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e09d8b6de35499d85ff50e2c54497e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1a4742eb5d045ea850a6c93b6a45d7b.pdf
    • https://cdn.shopify.com/s/files/1/0433/3538/5243/files/beniduxina.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/el_dia_que_la_tierra_se_detuvo_pelicula_completa_en_espaol_repelis.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4911/files/categories_game.pdf
    • https://static.usrfiles.com/ugd/b8c837_50d717412911452c9e850a5bb5fc6dc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a32f71df2c1490b8a6deff2a4a70521.pdf
    • https://static.usrfiles.com/ugd/b8c837_42f546c2cd7845dba95f46381acebb02.pdf
    • https://static.usrfiles.com/ugd/b8c837_673e56f8205f42828335ea6c0c168754.pdf
    • https://static.usrfiles.com/ugd/b8c837_35c50be2dfed4c58b285b38b45f37d2c.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ded.bin
aa5372358103b7cc4ef908374b598f052ee1396b52dcf70fa50afca2ab89f292		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DED 3036 bytes
font_01_sfnt_off00005aff.bin
84f538786df70293186141bcf7bc20811c6b3623cadb849541fae05deb5664ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFF 5876 bytes
font_02_sfnt_off00006e4e.bin
4bcc1cb5933a58c5b17fe602a4e4463c5e345c68d6a99fc0caaf158b1cbf9072		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4E 16364 bytes
font_03_sfnt_off00009e46.bin
051837a0337477dfbb6902371460c1670985facfce249cf256f6d038aeae7303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E46 16132 bytes

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