Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1ac0f1ad7fcdceb…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 23:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9334760f3b4ee90080aa6c78ccdb5339 SHA-1: fc7e2afc7de4544081b78926c2562273df734315 SHA-256: e1ac0f1ad7fcdcebd4ac48d676ed44e71709de90023981d2fe32a1791376d28c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=3+bedroom+house+plans+in+kerala+double+floor'. This URL is presented within the document body, disguised as information about house plans, to entice users to click. The PDF also contains a large number of external links, characteristic of a link farm, further supporting the malicious intent of redirecting users to potentially harmful sites. 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.me/wix?keyword=3+bedroom+house+plans+in+kerala+double+floor
    • https://static.usrfiles.com/ugd/b0b521_87833972fceb4340b4dfd92e4a44caea.pdf
    • https://static.usrfiles.com/ugd/b8c837_0386f3b8c84d4403ae92a649a43a33dc.pdf
    • https://static.usrfiles.com/ugd/c1615c_d2f9361573744cf1be3fc476bfa1ae4d.pdf
    • https://cdn.shopify.com/s/files/1/0435/2085/2122/files/genilapuvidarufifusoke.pdf
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/kujukunoleb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdf
    • https://cdn.shopify.com/s/files/1/0433/5661/8917/files/ashokan_farewell_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7384/files/jemolojirofexamopirubelur.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/27889899260.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/45730390148.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_off00005362.bin
610b6ec8c981c77626d23c10bac33a31ad2d525c8e4adb8eac8880cbb459a793		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5362 5552 bytes
font_01_sfnt_off0000660f.bin
b03a8ab1d4a4bb37028731e5a52b224591bca1227f9b5aaa39ccc3666210d3ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660F 10312 bytes
font_02_sfnt_off00008992.bin
bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8992 16060 bytes

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