Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8db89ecf964d933…

MALICIOUS

PDF

41.0 KB Created: 2020-08-15 08:38:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b8b3c42adcbbf4311dc41541c9e64f0 SHA-1: 282c3bf4277bd129907f331edfcf7ff6c4d951fd SHA-256: c8db89ecf964d9334acc02e9b86512975e4b3169f192e63de34ac63d9e5b8f5d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. One of these links, https://ttraff.com/pify?keyword=arc+length+and+radian+measure+worksheet+3, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to educational worksheets and the wkhtmltopdf tool, suggesting a lure to disguise malicious redirection. 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.com/pify?keyword=arc+length+and+radian+measure+worksheet+3
    • http://files.soupsatthestation.com/uploads/1/3/0/9/130969065/pisodewa-dabovifafekazo-wijet-foxekiwu.pdf
    • http://files.ignaciovaldes.net/uploads/1/3/1/4/131407818/figuvozariwadaji.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0262/files/77240349043.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/84314394201.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/xekom.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/dead_by_daylight_trapper_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/2nd_grade_geometry_worksheets_free_printable.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/lokapinizaxonevodovus.pdf
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/ableton_live_9_tutorial_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/82166352429.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2623/files/introduction_to_binary_number_system.pdf
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/jebewunipefuze.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1424/files/41024729318.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_off000060f0.bin
5a3fd81c4c8eb3504492b8dd45d83baabf9e7022a088896ec024313a9fe9bfae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 5664 bytes
font_01_sfnt_off0000740c.bin
97ed0ed76ce4942ee48808bdee84a6c1b8c4438d30141ff8fc338c1dc9d1444e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740C 10280 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.