Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9fc17613ed65332…

MALICIOUS

PDF

38.8 KB Created: 2020-08-30 15:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bbdb5a96708277ed2b7d6ffe6a991ae SHA-1: ea22c9fd960447618fa7229642285584be1f21ab SHA-256: a9fc17613ed653326882444d7d4626182462fc896f56fd7ccf525bff44343864
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is designed to lure users into downloading a RAR archive. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of a link farm heuristic further indicates a campaign to distribute malicious content.

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=blood+orange+angel%25E2%2580%2599s+pulse+rar+download
    • http://bytlly.com/175jm5
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/26623748701.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/10259594155.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/8526246406.pdf
    • https://cdn.shopify.com/s/files/1/0435/8347/1771/files/2mm_hygienic_wall_cladding_sheet_solid_pvc.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/quantitative_test_for_carbohydrates.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_942a9732dc6c43759f3e2f8c2f290719.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/99445014092.pdf
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/golutibokejifoluvawebeza.pdf
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/canon_scanner_lide_300_driver_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/92048490993.pdf
    • https://cdn.shopify.com/s/files/1/0465/0070/8510/files/81448145782.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/bonafide_certificate_format_for_passport.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/bash_yaml_parser.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_off00005165.bin
5e622d13945b2c819de395b100441d7cee1a3f8654ed893ac89e586a1cbb1c27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5165 5320 bytes
font_01_sfnt_off000063aa.bin
8fc7550433aeecb6bb1c32824fa2a635439171a5f5e45e94dc13f05efd626906		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AA 12624 bytes

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