Malicious PDF — malware analysis report

Static analysis result for SHA-256 f161aaa3dbfb0be6…

MALICIOUS

PDF

43.6 KB Created: 2020-08-20 07:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90fce51d9f1858859d4960d0a901d692 SHA-1: 36cdfeb1a9665b8014d1cc4d0aa678b1840dc57b SHA-256: f161aaa3dbfb0be6f26598c3b41646d4102300539651fecd60bd66eef55a5fd2
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary lure appears to be related to "bronchitis antibiotic guidelines", directing users to the `ttraff.ru` domain. While no scripts were extracted, the presence of numerous embedded links, many hosted on `cdn.shopify.com`, suggests a content-driven lure to a malicious site.

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=bronchitis+antibiotic+guidelines
    • http://files.csstemcert.com/uploads/1/3/2/3/132303045/kufub.pdf
    • http://vukigak.martynsmondayclub.co.uk/uploads/1/3/0/8/130814238/vafiri.pdf
    • http://files.lefkasluxuryvillas.com/uploads/1/3/1/4/131407572/a698b2ba0245db8.pdf
    • http://files.gratefulhomestead.net/uploads/1/3/2/6/132682848/588403.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0440/2269/4046/files/78467696530.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/56165162872.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5569/files/95232882808.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/demiwalorat.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/53781814496.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8362/files/oxidation_reduction_titration.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/76173310439.pdf
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/xuzador.pdf
    • https://cdn.shopify.com/s/files/1/0429/1349/7247/files/23481564207.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fc1.bin
b7973678e94503eafcbbd6c9bd70abe20a7b831221961a19ff458f7460776b99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC1 5272 bytes
font_01_sfnt_off00007191.bin
3694a9f5db3143cc0bfdbdcbf11cf7a3d01e8b80709276c486f4f218a6381543		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7191 10020 bytes
font_02_sfnt_off000093ad.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93AD 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.