Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd35238af51213a…

MALICIOUS

PDF

45.5 KB Created: 2020-08-29 17:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ea52676cf76681525721591891dd0ed SHA-1: c710286786d450222936252a92ec7610a5a747bb SHA-256: fbd35238af51213ab20089ffe1a623229df829654531c5d48a157dc5181b7b94
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL 'https://ttraff.com/wix?keyword=simple+future+going+to+exercicios' is identified as a known malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, suggesting an attempt to manipulate search engine results or distribute content through a network of sites. The document body itself is heavily obfuscated and contains the malicious URL, reinforcing the intent to redirect the user.

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=simple+future+going+to+exercicios
    • https://static.usrfiles.com/ugd/b8c837_d432e32bd3b54e0988582ef2b3f4adce.pdf
    • https://static.usrfiles.com/ugd/b8c837_35abd24c862d4319b7e29aed266c0f7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_505abca3aef8406ab29fe075d84f84b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5e70e157be746149adf42f7af666429.pdf
    • https://static.usrfiles.com/ugd/b8c837_4579e7ee784243c0a674461dea26c8ff.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/yasin_sura_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9957/files/all_star_trek_original_series_episodes_ranked.pdf
    • https://cdn.shopify.com/s/files/1/0463/3287/0817/files/direxa.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a77fbba861a436f9ccbe225fd91bce4.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_d66226dd4d2c4d5bbabaefc0d7307c15.pdf
    • https://cdn.shopify.com/s/files/1/0441/1329/7560/files/jemelegemikejiruxux.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/dalerutudirimakapobi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/dijinowenudibajima.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_off000073be.bin
60c210b3069b798c7fd694b32deac84d564749a2ae92adab32888966e2e7e039		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BE 5296 bytes
font_01_sfnt_off000085b4.bin
899dcaed78fb3a052bd1d1f4104ded9e484a2feae6ee2537e32957e6d2c83ea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85B4 10524 bytes

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