Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f4110ee66e8040…

MALICIOUS

PDF

56.0 KB Created: 2020-08-19 20:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d7a0929f77fd68dda2dfef0200ba9f1 SHA-1: 4f5292acd4285b10309adfed4d454ee1418495bc SHA-256: 82f4110ee66e8040bc954015471df20054ed7e6909a69e47f064834f643be48e
128 Risk Score

Malware Insights

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

The PDF contains a link to 'ttraff.ru', identified as a malicious redirector, which is disguised as an immigration form. The document body, though heavily obfuscated, contains the same URL. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or distribution. The presence of a malicious redirector link and the invoice/payment lure heuristic indicate a phishing or malware delivery attempt.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=citizenship+immigration+canada+form+imm+1444
    • http://files.showmyboutique.com/uploads/1/3/0/9/130968996/gevolurajozo-pudikegigugi-mofabes-mubexoj.pdf
    • http://files.clockwiseconsultingllc.com/uploads/1/3/1/3/131380210/tifosisukibaf_xojekiwegu.pdf
    • http://files.blakeemory.com/uploads/1/3/1/6/131606984/nimazemokofi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6343/files/mevepejefutidajumupu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4233/9992/files/jufomawopurojenolebizutil.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/fokir.pdf
    • https://cdn.shopify.com/s/files/1/0450/1169/7814/files/janejesibidikev.pdf
    • https://cdn.shopify.com/s/files/1/0445/3515/2804/files/samsung_led_tv_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8431/6823/files/git_branch_names.pdf
    • https://cdn.shopify.com/s/files/1/0435/9618/5763/files/aql_sampling_table.pdf
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/windows_emulator_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/data_science_para_negcios_livro.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_off00009be6.bin
6a47e52066a917b9683b5c0901c72aceeba156b023ccd41c24145f66e6930241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE6 5632 bytes
font_01_sfnt_off0000aeed.bin
9391afbdfffce0829d638d78824449154f1b22f97be613fd37847b0d6fc81bbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEED 10608 bytes

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