Malicious PDF — malware analysis report

Static analysis result for SHA-256 479775f073efb234…

MALICIOUS

PDF

75.7 KB Created: 2020-08-30 19:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfb3fe5d06d28f7db2f2d31656b8e038 SHA-1: 675108f9c0fa2053a7f899a1563da2154d02f715 SHA-256: 479775f073efb23445454226ca29b242e2907d0cfbf16e1103c62591d91aa46e
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, likely as a tactic to obscure the malicious destination. The ML classifier strongly supports the malicious verdict. The primary attack vector appears to be luring users to malicious infrastructure via embedded links.

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=supreme+120+lessons+for+the+nation+of+gods+and+earths
    • https://cdn.shopify.com/s/files/1/0431/1924/7514/files/fafikakuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/uc_browser_java_nokia_200.pdf
    • https://cdn.shopify.com/s/files/1/0440/3871/7605/files/hova_bator_2362n.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/woman_yelling_at_cat_meme_template_hd.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5074/files/3007071960.pdf
    • https://cdn.shopify.com/s/files/1/0432/6634/3072/files/xubefiravazadasumoveruz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/razazumivarudubolinubufa.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa5b7d089cdb4cbb8be8d603ec76784e.pdf
    • https://static.usrfiles.com/ugd/b8c837_e93bba4aaf294c8580a8d5815231a183.pdf
    • https://static.usrfiles.com/ugd/b88e3d_3bb616cd156c4996a1647e84cc49ef16.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7e4032911c447a1b1c289acb84cc05b.pdf
    • https://static.usrfiles.com/ugd/6f58fb_adb206e7ec5c45d99f983b0968f7683e.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/lemawoxugenukenanivasu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/93172110941.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/97813179434.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/malcolm_baldrige_criteria_for_performance_excellence.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_off0000dcea.bin
74c730f2bd578c5289097cd3f6481350bafbcf64fbc072017651dcbc462e61b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEA 5884 bytes
font_01_sfnt_off0000f0c4.bin
c05ea859a37c3d9b6554db67be7af0dc56e0aeab24d94d5fc8a1ebc7915edf78
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C4 15624 bytes