Malicious PDF — malware analysis report

Static analysis result for SHA-256 84136b99364b5ce6…

MALICIOUS

PDF

43.7 KB Created: 2020-08-17 00:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4714ea3625773b72ed398ac44bc00434 SHA-1: 74cbca61553dd33a8c26c02fc527fdc5dd693a44 SHA-256: 84136b99364b5ce61e2dc010980487da1947b400d40ae446ab077ca15b09c455
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous URLs. One of these URLs, 'https://ttraff.ru/pify?keyword=synergy+ubuntu+free', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to external content. The primary attack pattern involves redirecting users through a chain of links, likely leading to a malicious payload or phishing 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.ru/pify?keyword=synergy+ubuntu+free
    • http://xulisu.handmadeofvillage.com/uploads/1/3/1/3/131383297/e65397.pdf
    • https://cdn.shopify.com/s/files/1/0432/7414/1864/files/mortal_kombat_x.pdf
    • https://cdn.shopify.com/s/files/1/0429/8955/1770/files/kidz_bop_thrift_shop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/aoac_methods_of_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0435/3110/8503/files/cadena_de_abastecimiento_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/magabenasinomowafaxob.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0807/files/stakeholder_analysis_example.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/zatimojuwavakufofepowa.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9871/files/dudorimodokowo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/97825529592.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/wofesazosola.pdf
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/5935249322.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_off0000658f.bin
3cc81bd470a46e7496b02256454cfc43474dacb4aab1ae0cc64913bb56f8b630		 pdf-font-stream PDF embedded font (sfnt) at offset 0x658F 4860 bytes
font_01_sfnt_off00007634.bin
57816ea2944a1d8d06689b22c4f8d6312f651b6908ff2e613bb7c2f26e6125a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7634 13872 bytes

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