Malicious PDF — malware analysis report

Static analysis result for SHA-256 396186ae6ac04b1c…

MALICIOUS

PDF

35.5 KB Created: 2020-08-10 21:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bb6436587f68e3ccfb8565f6b90c8f5 SHA-1: a4a35b8ec40c520feb34b6bd0430e6a5ef0c54f4 SHA-256: 396186ae6ac04b1c129c8d65167927d564334377ddaac3cd60af05c8f178c57a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=brennan+manning+libros+pdf+gratis', is identified as a malicious redirector. This suggests the document is designed to trick users into clicking through to malicious sites, likely for phishing or malware distribution.

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=brennan+manning+libros+pdf+gratis
    • http://files.xbosak-art.com/uploads/1/3/1/8/131856987/7968398.pdf
    • http://files.capricecrawford.com/uploads/1/3/0/7/130776776/e85cf84bf10ea.pdf
    • http://files.realestatesystemsofgillette.com/uploads/1/3/1/4/131482997/85d39700f11d5.pdf
    • http://files.tradepennystock.net/uploads/1/3/2/8/132814980/3088012.pdf
    • http://files.kristinasereikaite.com/uploads/1/3/2/6/132696330/sejosolobiwuweje.pdf
    • https://cdn.shopify.com/s/files/1/0432/5900/3038/files/xazidaba.pdf
    • https://cdn.shopify.com/s/files/1/0441/3577/6408/files/novuxisanafez.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/18442629628.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/apa_style_citation_format.pdf
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/31234022081.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/off_road_trailer_plans.pdf
    • https://cdn.shopify.com/s/files/1/0436/5765/8521/files/child_development_and_pedagogy_books_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5425/files/69012714574.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/8929614000.pdf
    • https://cdn.shopify.com/s/files/1/0432/8089/2057/files/wamimesigoromapulosejami.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/gujixi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.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_off00004c7e.bin
2aa36082d37e5d31d3b339325db1b167bd1105e5fa2b66abc928b130652013a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7E 5552 bytes
font_01_sfnt_off00005f35.bin
c88a9b9414b1778d48eb1244eb7daa2669de34ba8440d885602f07fac91b59de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F35 9900 bytes

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