Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e893bb7e44fdb5…

MALICIOUS

PDF

70.0 KB Created: 2020-08-30 07:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1694a470fba8959ea5a96a46cc6e9d1 SHA-1: 8e6d931ba5d799c860f42656fbe09001e053359c SHA-256: c3e893bb7e44fdb566e4dab09e46ed873389bd188387ac999ae652e9b526cc5b
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a link farm strategy, likely to obscure the true malicious destination. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated and contains a URL that appears to be the primary lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=high+volume+manual+air+pump
    • https://cdn.shopify.com/s/files/1/0438/4007/7981/files/nawiwefuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/83003070195.pdf
    • https://cdn.shopify.com/s/files/1/0427/7665/8087/files/brooklyn_nine_nine_all_seasons.pdf
    • https://cdn.shopify.com/s/files/1/0462/6415/6314/files/american_idol_nude_contestant.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/95899477627.pdf
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/60590193169.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/axillary_block.pdf
    • https://static.usrfiles.com/ugd/b8c837_e847a8f80fd549a3a5b5a5386cd21c87.pdf
    • https://static.usrfiles.com/ugd/b8c837_274da813579f432e9db73af3b685073c.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fd5b2d18e664f12a2a6cb709553ebb3.pdf
    • https://cdn.shopify.com/s/files/1/0449/6778/8712/files/since_you_ve_been_gone_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7867/files/78456392608.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/toraladomokipina.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_off0000c7c0.bin
690210eaef8e3a60bfdc17be3001e4304ce8b024321ee94b3c3b70a1d11893b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C0 4880 bytes
font_01_sfnt_off0000d827.bin
9ed285a564cac5e87bd5af7850955d318759f5e0d6a27f88666ae98212ba9ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD827 10888 bytes
font_02_sfnt_off0000fd20.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD20 4324 bytes

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