Malicious PDF — malware analysis report

Static analysis result for SHA-256 f109901f16f4a63f…

MALICIOUS

PDF

42.5 KB Created: 2020-08-29 19:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc8f4d3c3a347ae682ac1c05b2a6d4bf SHA-1: 3b37d8621809504bda67987636b79481c2e6c82c SHA-256: f109901f16f4a63ff507decaf3a8ae8b7504fa0eb1919249c2b4e949732360ee
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=man+pride+gel'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure for the 'Man pride gel' product.

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=man+pride+gel
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/auditoria_definicion_informatica.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/lekadadowuwukaro.pdf
    • https://cdn.shopify.com/s/files/1/0436/7892/4953/files/iomega_storcenter_ix4-200d_firmware_3.0.6.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/35399541051.pdf
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/15367152682.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/55660298884.pdf
    • https://static.usrfiles.com/ugd/b8c837_45efedfe25864268ad47df863318a9b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8a1315913324db58de1abe100be3bfd.pdf
    • https://cdn.shopify.com/s/files/1/0428/9809/6284/files/71444845860.pdf
    • https://cdn.shopify.com/s/files/1/0437/0127/2729/files/femetire.pdf
    • https://cdn.shopify.com/s/files/1/0447/1308/3036/files/pujimane.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_off00005835.bin
048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5835 6744 bytes
font_01_sfnt_off0000691a.bin
ead41da95fb9d6fde5d4b496a2d6c871cedbfafbd4ba13cf89c6cccf3c9bf1e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691A 4956 bytes
font_02_sfnt_off00007a03.bin
e81b8f20116b0c1fa337b775ee72a9ef79f2a31fdc97b11265166681f2b5e9d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A03 10360 bytes

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