Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a76d72fc74b80be…

MALICIOUS

PDF

43.9 KB Created: 2020-08-27 21:40:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59dc8eb5c3ebe7f962c4ae005a7b38f1 SHA-1: cfe182a940588dc0ceb0bbd4d78f5f303ab5c5ee SHA-256: 7a76d72fc74b80bea5a60869cb13d46377adc83fa376c95ce91b4c7c1029a25f
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to Shopify-hosted PDFs. One prominent link, 'https://ttraff.ru/pify?keyword=dieta+ayurvedica+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware delivery.

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=dieta+ayurvedica+pdf
    • http://files.ledsignsnow.com/uploads/1/3/1/0/131070581/9246722.pdf
    • http://files.toxicfreephilly.org/uploads/1/3/1/8/131871705/vikapogafizijokaj.pdf
    • http://files.mrkrieg.com/uploads/1/3/1/4/131437457/bulekaf.pdf
    • http://files.catherinehedrich.com/uploads/1/3/0/7/130775304/9562005.pdf
    • http://files.ridgeandvalleyreptiles.com/uploads/1/3/2/7/132740435/4298851.pdf
    • https://cdn.shopify.com/s/files/1/0431/2501/4679/files/5449249795.pdf
    • https://cdn.shopify.com/s/files/1/0428/2590/8383/files/sositevevan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/36672733428.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1138/files/pyvis_directed_graph.pdf
    • https://cdn.shopify.com/s/files/1/0431/6879/2733/files/nafowawanubamumazopib.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/commuter_express_419.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/buzekeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/zasikubisijobanenurob.pdf
    • https://cdn.shopify.com/s/files/1/0459/1924/0341/files/80476839579.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/animal_cell_culture_medium.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7711/files/types_of_airplane.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_off00006e78.bin
bb932685833727993e18936e89a3990bdd8c34429fd379ac0c811074e927a313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E78 5100 bytes
font_01_sfnt_off00007ff5.bin
a69eab3ffb893d0c6f00c5bab5aa59d7886d5664374f7feeffa0a163dae69a23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF5 10088 bytes

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