Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7829b5ef85dd0a1…

MALICIOUS

PDF

45.4 KB Created: 2020-08-30 04:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f6621b4f3785488cdab1b2da296ebdf SHA-1: 898252f0f1224e170dc70fd333d793feec7b4918 SHA-256: d7829b5ef85dd0a1356154a9ab233480622073f4a53ebd89c8c723ed53e5a9bf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used in SEO spam or phishing campaigns. One of the embedded URLs, 'https://ttraff.com/wix?keyword=new+year%2527s+mad+libs+printable', is flagged as a known malicious redirector. The document body itself is largely unreadable binary data, but the presence of the malicious redirector and the link farm heuristic strongly suggest an attempt to direct users to malicious content. 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.com/wix?keyword=new+year%2527s+mad+libs+printable
    • https://static.usrfiles.com/ugd/b8c837_ca7214c10c1b47438db081708e9ff2ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_915b9edfcf33449a9d7553c3739e187a.pdf
    • https://static.usrfiles.com/ugd/b8c837_be78dcb047de461186c38a227d43f792.pdf
    • https://cdn.shopify.com/s/files/1/0431/7790/2241/files/67049149015.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/95431887112.pdf
    • https://cdn.shopify.com/s/files/1/0439/5309/4811/files/16874273592.pdf
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/misuxonoxejav.pdf
    • https://cdn.shopify.com/s/files/1/0430/4109/5834/files/the_sims_3_patch_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/99119297308.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/dark_souls_2_ce.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d76.bin
7936af8ca5c1901f3163bbec884670fb7765daf445a94affa4124e4c712f6b34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D76 5440 bytes
font_01_sfnt_off00006ff3.bin
844a7634fcdbefb613c12d7c0ff78f13af68c435b8e836b4d430655965b86713		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF3 9980 bytes
font_02_sfnt_off0000925f.bin
4354bd37e85197a997b2f6c8c8698034d2711068b41d1b66819094364c364bcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x925F 16544 bytes

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