Malicious PDF — malware analysis report

Static analysis result for SHA-256 279283ac8beb9e50…

MALICIOUS

PDF

39.0 KB Created: 2020-09-02 04:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c45937df2cfb22a4ebcf2a94810773d SHA-1: 7d223c5e182c55bf63ef4b2dbbcf409e28685221 SHA-256: 279283ac8beb9e50b4d263de0fee1ea5e240728e529d3d91cb9333d785dd0377
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=solamente+tu+ringtone'. The document body, though heavily obfuscated, also contains this URL and appears to be a lure related to a ringtone. The presence of a link farm heuristic further suggests malicious intent, likely to distribute further malicious content or engage in SEO-based phishing. 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.ru/wix?keyword=solamente+tu+ringtone
    • https://static.usrfiles.com/ugd/2ddd39_15897064f51f40738e9951a52f223038.pdf
    • https://static.usrfiles.com/ugd/b8c837_a644aabf54cd4891aee24555feb8c015.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc7aa24064ba448a99e040353308ca38.pdf
    • https://static.usrfiles.com/ugd/5de1df_0f345d182f1e497787768748958ae22e.pdf
    • https://cdn.shopify.com/s/files/1/0432/4527/3248/files/afcat_2020_question_paper_with_answer.pdf
    • https://cdn.shopify.com/s/files/1/0434/3388/5846/files/zambia_country_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/5187/5494/files/dewopitugepipemizafuvod.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/59906164984.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/rezojibamuxozirinupodajo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0668/0484/files/93958947901.pdf
    • https://cdn.shopify.com/s/files/1/0463/1239/0821/files/gmail_contacts_disappeared_android.pdf
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/ballade_pour_adeline_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/5106/3195/files/adding_vectors_using_component_method_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/nejusogufaxeramamab.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_off00005904.bin
25c2843013cacc8fe6848fea54d4b582aa7e2df8e12ce04453fa734c72f5b48c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5904 4928 bytes
font_01_sfnt_off000069ae.bin
6fc0f7d66f2809f1869c237272f53226a2c5c9fecd4b1f99a6c75d0b9f368551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69AE 11024 bytes

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