Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92ddf80735f87a2…

MALICIOUS

PDF

41.8 KB Created: 2020-09-06 16:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ec7b3a4d0ffe71dafd36fd9402ea8e0 SHA-1: 7de6e90c062cad5ca655e6fc24ebb3003aa25b81 SHA-256: c92ddf80735f87a25a53e7a11f2403f493d12c4496b856b0248cd6778590617c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, characteristic of a link farm designed to obscure the ultimate destination. One of these links, 'https://ttraff.link/wix?keyword=arewa24+jingle+ringtone', is identified as a malicious redirector. The document body also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to a harmful site, likely for phishing or malware delivery.

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.link/wix?keyword=arewa24+jingle+ringtone
    • https://static.usrfiles.com/ugd/b8c837_e26fdb7c845846f9941cd61456e8736b.pdf
    • https://static.usrfiles.com/ugd/575363_407b76b991474c738f1dd21145e12614.pdf
    • https://static.usrfiles.com/ugd/98e2de_95cddedcfa48426c9d580b1d60ed3414.pdf
    • https://static.usrfiles.com/ugd/ea2f88_52b5df1d34cc4b2f9418e2e68572fdb3.pdf
    • https://static.usrfiles.com/ugd/a31856_34884ed8b88649d29bf1703969b91926.pdf
    • https://static.usrfiles.com/ugd/8e1900_c8c6ccdc98f54f3cbeece7ea360cfb0f.pdf
    • https://cdn.shopify.com/s/files/1/0435/3199/3242/files/woxarotu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/wegumejuteniwuru.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7567/files/11542490142.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/49047168761.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/37200476168.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/scattergories_list_3_answers.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_off00006608.bin
adca711f060a5c1905f895f1827687ef6bb2f7e5900bf03484280dfc95f59cd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6608 5052 bytes
font_01_sfnt_off00007765.bin
7caaddbdaffe969c6f3823a05272f4fe666c03a3593a50350bd651bf037d5d36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7765 10396 bytes

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