Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dde4675815e457c…

MALICIOUS

PDF

38.0 KB Created: 2020-08-20 19:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 510a54ae8c7be730522b8a6923ff7ad4 SHA-1: a3c056ea404f22e93b5e6dfeb7039b495417551f SHA-256: 2dde4675815e457c9849fff7c4a492fe4d4c3900fddf3c6ff5e450afd2bbf277
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=new+barbie+doll+games'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on shopify.com. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF link, suggesting a lure to a malicious site.

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/pify?keyword=new+barbie+doll+games
    • http://xojire.michaeljperkinsschool.org/uploads/1/3/1/4/131437626/035437631ecce9.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/nemarulefenijopabijenib.pdf
    • https://cdn.shopify.com/s/files/1/0430/0875/3827/files/adjoint_technique_de_recherche_et_de_formation.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/35257746930.pdf
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/literature_reader_class_10_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/funny_caller_ringtone_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/2353/8088/files/aluminium_sand_casting_process.pdf
    • https://cdn.shopify.com/s/files/1/0437/3748/1365/files/67151554620.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/vuxuvamipuravutaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/13854143695.pdf
    • https://cdn.shopify.com/s/files/1/0429/0989/2767/files/mufaxive.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_off000055b8.bin
18c7bef51f7a58cd9a1f7ae2527f848d975b5ede9334ee44ded1521f866c8fb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B8 5344 bytes
font_01_sfnt_off000067e1.bin
683bf211896ebba30569b3a01394bfd0699d375c54b8ddf34f4e3f06dc0f8b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E1 10368 bytes

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