Malicious PDF — malware analysis report

Static analysis result for SHA-256 59248953dc29c007…

MALICIOUS

PDF

40.8 KB Created: 2020-08-30 03:04:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7c81ee144c9fffc2d2257af3aa50404 SHA-1: dcb4acdd8c283df54cedfc55954d18ffa6dfc3d9 SHA-256: 59248953dc29c007979c30228913a614c2f7bafd82d76b9762acaa1a5fb712c2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. The primary purpose appears to be luring users to a malicious site through a deceptive link farm.

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.ru/wix?keyword=dark+souls+2+things+betwixt+coffin
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/html_page_to_using_php.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/28772081221.pdf
    • https://cdn.shopify.com/s/files/1/0463/7104/5537/files/42817853931.pdf
    • https://cdn.shopify.com/s/files/1/0437/5746/9845/files/8116720739.pdf
    • https://cdn.shopify.com/s/files/1/0450/8313/2056/files/kinetic_family_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/32724422846.pdf
    • https://static.usrfiles.com/ugd/6116da_10536d500a8844faba85a31b1ac3bc8b.pdf
    • https://static.usrfiles.com/ugd/9d869b_c319a5c446c84c51836286444980be1a.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/apc_smart_ups_2200xl_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/apresolina_25_mg_bula.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/lupido.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/47597541262.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_off00006195.bin
27484b98c54aa91be3ee01631770a090be0b297686cb5352590ea20c1710b563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6195 5636 bytes
font_01_sfnt_off000074df.bin
c5e0217cdd06ccf281997db0ff5a9e439a25a83ac22ee953bb78bad01b84035b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DF 9980 bytes

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