Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b6238e4776df07…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 13:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81b50bb8fbf23810002a486bc46d6596 SHA-1: d02c8dfff4abed45c49de9e0deaa74c414d386e0 SHA-256: d2b6238e4776df077afa74554831ba24bbdec1ca19d43e2e53a82e8bdf945ce4
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.cc', which is flagged as malicious. It also exhibits characteristics of a link farm, with numerous embedded links, many hosted on Shopify. The presence of a visual download button lure further supports the malicious intent. The document body, though heavily obfuscated, contains the malicious URL and references to other PDFs, suggesting a delivery mechanism for further payloads.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=merge+all+sheets+excel+vba
    • http://files.inspiralgroup.co.uk/uploads/1/3/0/7/130776423/wigegewasapupugutax.pdf
    • http://files.bankaitislab.com/uploads/1/3/0/7/130740625/zimerawatule.pdf
    • https://cdn.shopify.com/s/files/1/0435/3818/6394/files/61165086885.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/35287236513.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/bewepesagimaxujop.pdf
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/warhammer_40k_ork_codex.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/dobajepawiluburi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/auto_technician_resume.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/double_digit_addition_with_regrouping_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/84577039546.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/budget_making_process_in_zambia.pdf
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/vepilakadusunav.pdf
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/1387752356.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_off00006b9f.bin
996920153eaf2000e09deec9e8dd5f0c3a3bbed4814bda8c906ccf9a88a95ab1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 5336 bytes
font_01_sfnt_off00007dd6.bin
dabb2af245e031cd2d448db70f92b7177168cf42f4db3fe92271f57413dba6f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD6 10288 bytes

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