Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f2c6f543e05e9e…

MALICIOUS

PDF

47.9 KB Created: 2020-08-06 20:26:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf1a2c8be999f15a78bb91b52a328fcd SHA-1: 8b724f9d027a089e57a0121ad4b2f6dcf8d339ec SHA-256: d2f2c6f543e05e9ebddcde68037aea6eed638195c4874453d82d9d21a5504c2c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link to 'ttraff.cc' is identified as a malicious redirector. This suggests the document is part of an SEO poisoning or link farm attack, aiming to lure users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=texto+argumentativo+3+eso+pdf
    • http://files.drjamiemarich.com/uploads/1/3/2/6/132696113/d5506.pdf
    • http://files.anythinggoescustomcycles.com/uploads/1/3/1/1/131163590/2491591.pdf
    • http://files.pettyharbourmaddoxcove.ca/uploads/1/3/1/6/131636965/caef74ceed2fc1.pdf
    • http://files.mirchaiya.com/uploads/1/3/0/8/130814329/3d6299288222.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/sopidadimafunerimeme.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/geek_squad_kaspersky_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/busidoviwubas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/xituvimazuvipogemabem.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/77742934658.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/64573305888.pdf
    • https://cdn.shopify.com/s/files/1/0438/0524/5597/files/tutibakajamulatubip.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/juxubuvamaserafoso.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6069/files/gmc_c4500_topkick_for_sale_craigslist.pdf
    • https://cdn.shopify.com/s/files/1/0437/1709/9675/files/71583621727.pdf
    • https://cdn.shopify.com/s/files/1/0434/2484/1890/files/89565715990.pdf
    • https://cdn.shopify.com/s/files/1/0434/5846/1863/files/hidden_pictures.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_off00007c0f.bin
164305f545ddf7132c652aca2a2b520a77b9d91bd4b78e1b44f7bfa595f7b3db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0F 5568 bytes
font_01_sfnt_off00008ef8.bin
f1780889e2aa73ebfb3f81aa189d3b3a057c6c78467d96d9440cda3622e71855		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF8 10952 bytes

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