Malicious PDF — malware analysis report

Static analysis result for SHA-256 75657e4e13ba2d60…

MALICIOUS

PDF

48.0 KB Created: 2020-08-12 08:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 470e5b52d7420753a77c53c3f009330d SHA-1: ecfcb16c11ebe395c43caa747146dffe889cf5bb SHA-256: 75657e4e13ba2d60f2a92d0b6f172c643b91a0ccf6eff2d8b4896234536cc0fa
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which likely serves as a lure. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDF files, suggesting a coordinated effort to distribute malicious content. 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.com/pify?keyword=boards+and+beyond+checklist+pdf
    • http://files.drescher.photos/uploads/1/3/1/4/131406181/nidefixowibuf_zepumopa_bageraluv.pdf
    • http://jiviruwal.stmarysbrollagh.com/uploads/1/3/1/6/131636725/9497246.pdf
    • http://gumegaje.doyouknowhim-nh.org/uploads/1/3/0/7/130775387/781f4bc7ca0361c.pdf
    • http://files.regencyparkcary.com/uploads/1/3/1/4/131454270/8102637.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/34058427456.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/wudavuvesazutetoluwafa.pdf
    • https://cdn.shopify.com/s/files/1/0440/2587/2549/files/63237089656.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/jajupokikokabij.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1185/files/vajafoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/42632770851.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/rapidex_english_speaking_course_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/21249511936.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdf
    • https://cdn.shopify.com/s/files/1/0433/6038/7240/files/safety_shoes_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.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_off00007dae.bin
b6f4c7b55a0bc1de811999a2ebec956baa9c5daacd2975da1b44a83065304c2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAE 5600 bytes
font_01_sfnt_off000090ab.bin
dbdcfc8498b3e66b881ae35842a2869f6c39971b180ee2911b7602f588ff05a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90AB 10120 bytes

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