Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9543deb565e5605…

MALICIOUS

PDF

50.5 KB Created: 2020-08-06 09:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58c6805df72a2ecbeb537722a0a4f19d SHA-1: 1049e482e73b1ac856abc72beec39e3e82458ad2 SHA-256: d9543deb565e5605813b22864b4ac7a5f1c1f98a650e0f317e1bac6baa04cee8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=aldous+huxley+obras+pdf'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure. The PDF also contains a large number of external links, indicating a link farm strategy.

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.cc/pify?keyword=aldous+huxley+obras+pdf
    • http://files.fritzassociates.com/uploads/1/3/1/0/131070612/vugolusal_rigabudubibutus_besuvoju_sitasidaxopeg.pdf
    • http://files.northlinecattle.com/uploads/1/3/1/6/131606335/gudatedugak.pdf
    • http://files.nvarealestateresource.com/uploads/1/3/0/7/130775858/5803494.pdf
    • http://files.mib-hq.com/uploads/1/3/0/7/130738998/5035097.pdf
    • http://files.momsrating.com/uploads/1/3/0/7/130739603/nonigux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23063093424.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/guluga.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/29458703147.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/tivixika.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/isescape_safe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/posewivipuresipagudijafan.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/63886487611.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/ruwizuzi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5686/files/ripovagix.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/36653149608.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/88589831146.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/59935761057.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_off000087d7.bin
164f47f24f3ee6958860e768d1f9db34febab500b692a6ba663f45fa77ead4cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87D7 5428 bytes
font_01_sfnt_off00009a47.bin
994fcfb522044b4b0dadc599f1b0dde56e9ce73db2d3ff0f1f5c9bd6d332be77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A47 10296 bytes

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