Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dbb67a989bbb611…

MALICIOUS

PDF

39.7 KB Created: 2020-08-29 17:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab7de2ba04975704afcb0020849297cc SHA-1: 784c8f745edd5d02a3ea467dbc2d9937b00043bf SHA-256: 9dbb67a989bbb6114eea7ec86315411628e764ca68844f367b5b603c4f106d7a
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and numerous embedded URLs suggest a link farm designed to trick users into downloading potentially malicious files, likely related to device drivers. The PDF_SEO_LINK_FARM heuristic further supports this, indicating a large number of links pointing to external PDFs.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/wix?keyword=hp+dv6-6c35dx+drivers+windows+7
    • https://static.usrfiles.com/ugd/2c608b_87c021679bdc47cca7b5300faa08deb5.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0018bb3149a436194e978a19552e0c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_4985129fd57a4576b36b95f300dba106.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cab640c009640eda6bf127469db5ad7.pdf
    • https://static.usrfiles.com/ugd/15cd4d_85e24de973764ac2ab34da094fffd5fb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d7cf7449f994085882a662e3ea1e713.pdf
    • https://static.usrfiles.com/ugd/b8c837_642773ac15ce4b6585d5d3bfa5f34a20.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf47b8a5ed044183b087de7d3514c807.pdf
    • https://static.usrfiles.com/ugd/a382ee_55be28ef09e14b90a3dd0b57ded18e4b.pdf
    • https://static.usrfiles.com/ugd/c20ea7_5cb8bbaf3ccd41959ff16604de8c17de.pdf
    • https://cdn.shopify.com/s/files/1/0448/0329/3346/files/photographic_memory_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/7445400407.pdf
    • https://cdn.shopify.com/s/files/1/0436/9678/3514/files/busisewijekiruzuvidavu.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_off00005c7d.bin
9b6daf7a9d636ea5c4bbdf56d083fc621231d176e836e23bfbab0d5e90538f56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7D 5560 bytes
font_01_sfnt_off00006fa1.bin
a144466f70d9eb4f8d689650d12b2469b84b3b1ab81774ed33776e84aa801f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA1 10060 bytes

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