Malicious PDF — malware analysis report

Static analysis result for SHA-256 51ff2d14652cc80e…

MALICIOUS

PDF

52.5 KB Created: 2020-08-07 07:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 631c56ae5689a62c8492bd6b005bb80d SHA-1: df3dc9888ae441f0c1a434013ea2fb5c0791409a SHA-256: 51ff2d14652cc80e2dcdb37ea102820e434ce9773bab96099abbab9b6ce90741
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=man+in+the+mirror+chords+pdf', which is flagged as malicious. This suggests the document's purpose is to redirect users to malicious infrastructure.

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=man+in+the+mirror+chords+pdf
    • http://nonimoki.stephaniebatemansweet.com/uploads/1/3/1/6/131636612/18002f44a.pdf
    • http://zarenuz.mrsmcbrideskindergarten.com/uploads/1/3/0/7/130776046/f3584d4e6289.pdf
    • http://files.poppyseedwindchimes.com/uploads/1/3/2/6/132695829/julodedusinozuzogi.pdf
    • http://files.belllog.org/uploads/1/3/0/7/130775827/2358242.pdf
    • https://cdn.shopify.com/s/files/1/0431/7036/5602/files/implicature_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/9272/9246/files/kupekakolajixan.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/49443808175.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/taveluwuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/sodobamiwokewunoloxidimed.pdf
    • https://cdn.shopify.com/s/files/1/0427/4506/9724/files/joretetegebimuluvuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/kejamavelixefusata.pdf
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/migerivuvizewubalirinevi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/zujowelejarepojuvikitut.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/2026529940.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/puzexatinawomogum.pdf
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/lutozipejode.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6471/files/36416375396.pdf
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/laviguvunav.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_off000080ef.bin
e75851e797f356c5daa9d3d66e00c375a331b38d03e9a023116c6d48217967c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x80EF 5368 bytes
font_01_sfnt_off0000930f.bin
7e99ab34684c67249005615272e38fbd8459bebc21ded61a4581d9f153f82d7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x930F 16148 bytes