Malicious PDF — malware analysis report

Static analysis result for SHA-256 adcc25fa8d1417de…

MALICIOUS

PDF

45.5 KB Created: 2020-09-01 01:36:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 714247cfb26aba5292175202df3e56a2 SHA-1: efc3453def5282ce7cd21e73edff7aa9d6515cad SHA-256: adcc25fa8d1417dee826903db693883000e257d2c9959cff86c614876155dd0f
140 Risk Score

Malware Insights

MITRE ATT&CK
T1204 User Execution T1204.002 User Execution: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The PDF file contains a lure instructing the user to enable macros or editing, a common technique for malware droppers. It also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to host further malicious content. The primary malicious URL identified is https://ttraff.com/wix?keyword=debt+snowball+worksheet+for+mac, which is flagged as a known malicious redirector. The document body itself contains garbled text but includes the malicious URL and several benign-looking PDF links.

Heuristics 4

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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=debt+snowball+worksheet+for+mac
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/witasolukakazuta.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xedatojif.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/93170668429.pdf
    • https://cdn.shopify.com/s/files/1/0449/6100/5736/files/aaoifi_accounting_standards.pdf
    • https://cdn.shopify.com/s/files/1/0436/4363/3822/files/75119920053.pdf
    • https://static.usrfiles.com/ugd/b8c837_bfe4b25bd3ae4f6299dd6680bcdcd65b.pdf
    • https://static.usrfiles.com/ugd/9ec29b_da177aaf4cf64764b08f49e386ac2591.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c0b666fe00649d2ad93306a2b54fbd8.pdf
    • https://static.usrfiles.com/ugd/191a6d_d5b7fe06343a413f9da9b46d468c25ca.pdf
    • https://static.usrfiles.com/ugd/df73ab_a1c03abc38eb47c6a8ce4487532f6fc1.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/50059122171.pdf
    • https://cdn.shopify.com/s/files/1/0437/9171/2405/files/dj_lobo_bachata_mix.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/list_of_freshwater_aquarium_fish_species.pdf
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/attack_on_titan_explained.pdf
    • https://static.usrfiles.com/ugd/b7ed05_0bcf20a1c40947cf8e5fcaad20759b98.pdf
    • https://static.usrfiles.com/ugd/affb4a_702f954e116b461aa2644465f8477123.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_94c1d0183a7347a58fa1d6c439d5e917.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_off000072f3.bin
67e5dcedefa749e03da905c114f5eaf3a7ced731c33347d97af13c07b0bcc46e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F3 5416 bytes
font_01_sfnt_off0000854f.bin
3820abb0273644bcfbf135f36ec84dfe61a8ef081a21bff60de96c6e80473a17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854F 10420 bytes

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