Malicious PDF — malware analysis report

Static analysis result for SHA-256 a044ac3364087e0c…

MALICIOUS

PDF

41.1 KB Created: 2020-08-18 19:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c05bc43862002a6e0f9b42dffdacbe6 SHA-1: 5216ea798be826e33317e2aeaeecec925f8af74b SHA-256: a044ac3364087e0c90a94a782087377c1f320525dc0568c3ffd3d6f689b6fc07
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm or redirection strategy designed to lead users to malicious content. The document body text, though partially corrupted, includes the phrase 'Sinusitis guidelines european' and the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted from this sample.

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.cc/pify?keyword=sinusitis+guidelines+european
    • http://files.myslovakiatour.com/uploads/1/3/0/7/130775867/negenufavap.pdf
    • http://files.mycdaclass-unit8.com/uploads/1/3/1/4/131453698/dekeganojenak_vuvibakexo_kopawajotis.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/fukushima_japan_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/king_platform_bed_woodworking_plans.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/matozanobisugagelujadoga.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/84369177340.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/50539760182.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/velimelarozovike.pdf
    • https://cdn.shopify.com/s/files/1/0454/0373/4184/files/activismo_poltico.pdf
    • https://cdn.shopify.com/s/files/1/0454/3532/2526/files/analytical_balance_me204.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7616/files/53910939104.pdf
    • https://cdn.shopify.com/s/files/1/0436/7518/9401/files/totufevokuvetuporoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/kunef.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2208/files/banting_recipes.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_off000060e3.bin
142d40798ccf2dc2df0ab500dd73b44a93b47fecaa14beb2d77b58cae4821f42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E3 5228 bytes
font_01_sfnt_off000072a7.bin
753fb791b40d47620667a3a3f8a25685e4248b211999bb12ef8091f78f62d02a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A7 11392 bytes

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