Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8d2c260ce4005d7…

MALICIOUS

PDF

38.7 KB Created: 2020-08-05 16:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 557862ba06897765836bae231cf46124 SHA-1: c536936c1659b740500b82a0fe439b8443200bdd SHA-256: a8d2c260ce4005d717f6e0f8b2abacdbe89dcc21f6bd4a73eee57d20f5731093
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDF files, which is indicative of a link farm. One of these links redirects to malicious infrastructure at 'ttraff.ru', suggesting a potential phishing or malware distribution attempt. The document body itself is largely unreadable binary data, but the presence of the malicious redirector is the primary indicator of compromise.

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.ru/pify?keyword=akreditasi+rumah+sakit+pokja+ppi+pdf
    • http://files.roygrayphotography.co.uk/uploads/1/3/0/8/130874050/gozak.pdf
    • http://files.emmauswellbeingmatters.com/uploads/1/3/2/6/132680870/jikevopofabi_puvule_norodakufun.pdf
    • http://files.haulksmaple.com/uploads/1/3/1/4/131454620/pebivowus.pdf
    • http://files.orchardhillestate.com/uploads/1/3/0/7/130776519/d18d7f0011b9.pdf
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/93207413941.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5767/files/autocad_2014_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/23238828372.pdf
    • https://cdn.shopify.com/s/files/1/0438/2123/6381/files/fipuwufadiwedigajaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/mpc_software_2._0_crack.pdf
    • https://cdn.shopify.com/s/files/1/0437/6638/2749/files/dejukanowewibeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/3446/7752/files/jipupoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7745/1428/files/jubujivepomosov.pdf
    • https://cdn.shopify.com/s/files/1/0428/6670/4550/files/kewigalosukenesalabizoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/jitivelupuvegapaxi.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_off00005af0.bin
dce217917e79100872a56f3e0fa2f799478a8a452520675211742575595ee2d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF0 5380 bytes
font_01_sfnt_off00006d16.bin
fa294ac912c2d4b40a27de75d7e61a2d3646ef116b7677b9ddc5a05f4e4462bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D16 9700 bytes

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