Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60ede95c4d82e03…

MALICIOUS

PDF

47.4 KB Created: 2020-08-31 04:50:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6646441815f4f257c47d10975947ecc9 SHA-1: f2cff01b1c03e4cd433da92961243a7d22fde053 SHA-256: b60ede95c4d82e03920c57438d3b6628b5b0a38b9b3254f7bfaa0ce06cdaa362
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, likely to improve search engine ranking for malicious content. The embedded URL https://ttraff.ru/wix?keyword=brittiarmeijan+kuvat+ilmaisia is the primary indicator of malicious intent, likely serving as a lure for further malicious activity.

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.ru/wix?keyword=brittiarmeijan+kuvat+ilmaisia
    • https://static.usrfiles.com/ugd/b8c837_ad930f9d705b458d8c3e80af9d8e9ac8.pdf
    • https://static.usrfiles.com/ugd/9219f8_732e2512f40b4ee9a16fd3b3bd983583.pdf
    • https://static.usrfiles.com/ugd/824332_406ef99f652d41c5850431e8b65ea0dd.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_ac704ad305ac46f6a6525efb7628d738.pdf
    • https://static.usrfiles.com/ugd/912de2_7f8d0801ea3b429f92445d486778a169.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99913566500.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/68634338455.pdf
    • https://cdn.shopify.com/s/files/1/0435/2809/3856/files/25348095828.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/bubamutonolufubopinew.pdf
    • https://cdn.shopify.com/s/files/1/0439/0410/6651/files/beautiful_wallpaper_hd_gif.pdf
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/pewovugadame.pdf
    • https://cdn.shopify.com/s/files/1/0434/3175/5932/files/adda_chat_app.pdf
    • https://cdn.shopify.com/s/files/1/0465/9494/9285/files/1568133753.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/96132242857.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/agricultural_machinery_and_equipment.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_off000070f8.bin
3ac9ce93b8a9b6d9aac51376f4c0e20585b53f23405626aa82591e9cec9e85ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F8 5080 bytes
font_01_sfnt_off00008225.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8225 1800 bytes
font_02_sfnt_off00008ab3.bin
e20ec525a505238fe7ea09319bca5863098e31cba95a4c5d0c1786bf51ee35d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB3 10796 bytes

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