Malicious PDF — malware analysis report

Static analysis result for SHA-256 44826dd451a4e8e3…

MALICIOUS

PDF

45.0 KB Created: 2020-08-10 02:04:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c04e9ca9cd90694e37ca2583e6fedc63 SHA-1: 5213a085e6d1095928f87350246a30fc8d9373a6 SHA-256: 44826dd451a4e8e3bee971bd540ced11892f0579ea2eb5374325b5e38596c74b
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=midas+touch+kiyosaki+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/pify?keyword=midas+touch+kiyosaki+pdf
    • http://jawejukon.fusw.org/uploads/1/3/2/3/132303189/91519.pdf
    • http://files.pinchpennythreads.com/uploads/1/3/2/6/132681954/1c7b840.pdf
    • http://files.tayloredteachings.com/uploads/1/3/1/8/131857114/a1353be3d73f.pdf
    • http://files.ebrahimkhanilab.com/uploads/1/3/1/4/131454034/9650357.pdf
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/apollonius_of_rhodes_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/bugupowo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6290/2438/files/xaxitedoze.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/99835521421.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/rilapuzemoxep.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/1728008441.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/gukasafibisida.pdf
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/we_are_all_born_free_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/7673/8462/files/87708238267.pdf
    • https://cdn.shopify.com/s/files/1/0434/0930/9848/files/fitabax.pdf
    • https://cdn.shopify.com/s/files/1/0435/4854/1087/files/obc_caste_list_in_up.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_off000072c7.bin
73275730a1bad6f6d683f59a64fa042f98351339bf562e9605150b6ebaa28328		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C7 5284 bytes
font_01_sfnt_off000084d8.bin
17444687ee2a83aa2ad9c9aeb3c56109f6c7ce4b4ae2cdf2c36e50e860131ed3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84D8 9960 bytes

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