Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66b0faffbcd4437…

MALICIOUS

PDF

36.1 KB Created: 2020-09-02 00:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4226d0f1011ca91478442e478de1a60b SHA-1: 8955b277e200931ee83787a721d00a570eaeae01 SHA-256: d66b0faffbcd4437a0a6870ace9ef116efa7eaa0752cd9b0efc8915d111e22fb
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as a textbook download, to a known malicious redirector. The primary malicious URL is https://ttraff.club/pify?keyword=ancient+civilizations+textbook+6th+grade+california+pdf. This indicates a phishing or social engineering attack aimed at directing users to malicious infrastructure.

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.club/pify?keyword=ancient+civilizations+textbook+6th+grade+california+pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1369814796.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuxojusi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8300/5078/files/purekaxofogegojener.pdf
    • https://cdn.shopify.com/s/files/1/0440/4989/1478/files/72416914591.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/wonewefesaloveginev.pdf
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/wivituvajonanodiwol.pdf
    • https://static.usrfiles.com/ugd/a18aa6_a559f13366b44523acd53d648e1f0377.pdf
    • https://static.usrfiles.com/ugd/6812d7_9df6456584094a8aa7e58dbd61aac651.pdf
    • https://static.usrfiles.com/ugd/07ef24_4de4c4a4bfaf492bbea8f7debb71c8f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a158be0dca7143db9bc04fc4dba28240.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_off00003f27.bin
24797d9f3ab7089ea8cdfe0e3c93f89db0e8e766af69f7db4455fc2b17b40be0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F27 5732 bytes
font_01_sfnt_off000052a0.bin
61ac31294ee05757132191cc4a93ce555621a3acdd6c04c4d4bae7a68b8d726c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52A0 10216 bytes
font_02_sfnt_off00007554.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7554 4324 bytes

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