Malicious PDF — malware analysis report

Static analysis result for SHA-256 51de40d1ec5bd73e…

MALICIOUS

PDF

52.8 KB Created: 2020-08-07 19:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82ca9c0c9a7cef787f69a3f90e7c7b59 SHA-1: 2939cb3a1de15bdb8aa861abe3084d933c76dc2e SHA-256: 51de40d1ec5bd73eca8162cbeaed88e5d86056ef1392a9bc72650d9762e20c5b
120 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Paradise Lost' and includes the malicious URL. The presence of numerous other links to Shopify domains suggests a link farm or SEO poisoning attempt to increase visibility of the malicious content.

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=paradise+lost+milton+pdf+italiano
    • http://files.djsfunctionandevents.com/uploads/1/3/1/4/131483305/3ce81c86fb1a2.pdf
    • http://files.catherinahearne.com/uploads/1/3/1/3/131380618/0a5e97b8700.pdf
    • http://files.thebloodcrowstories.com/uploads/1/3/1/3/131383821/vukekeguriwemime.pdf
    • http://files.madsonwines.com/uploads/1/3/1/4/131409309/julikuwumewaroka.pdf
    • http://files.goodworthclatford.com/uploads/1/3/0/7/130739263/jadikipegeboba-fususojezud-kafojakumum-zoxoraguxame.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.pdf
    • https://cdn.shopify.com/s/files/1/0430/6288/6551/files/givisuzovudamibunidavawa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/kizapufoxuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/sopalipow.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/92412512579.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/28353526142.pdf
    • https://cdn.shopify.com/s/files/1/0438/1209/4109/files/82789971311.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/xaxogarajufizivun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.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_off0000922a.bin
26a4f4afd7edf6751ede2239e0ba3e0e82c9224c7df4358ee5f28c06337b1a44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x922A 5188 bytes
font_01_sfnt_off0000a3b9.bin
d7aedf83cca46bf423d21f34c632da46d405f34d05bdaa69c7fb5acdf2443c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B9 10080 bytes

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