Malicious PDF — malware analysis report

Static analysis result for SHA-256 b25f5a5d35a19199…

MALICIOUS

PDF

39.5 KB Created: 2020-08-14 21:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98ed8c4555ff869d2282cf1d49a81660 SHA-1: 78acaa26b8ba40310f3d86eafcf5581d8a291d52 SHA-256: b25f5a5d35a1919988a1a4e723d3205fd663984daf334d84b5e94c5fe3ce08fd
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link disguised as a 'Jacoco report template' that redirects to a malicious URL. The document also features a large number of external links, characteristic of a link farm, likely intended to manipulate search engine results or distribute malware. The ML classifier strongly indicated maliciousness, and the PDF structure itself was flagged for containing a malicious redirector.

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=jacoco+report+template
    • http://files.stnp2036.org/uploads/1/3/1/3/131383934/8591189.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/niludapalazoxol.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/jiwavabivos.pdf
    • https://cdn.shopify.com/s/files/1/0439/3621/9291/files/xilidudeburuwiratezuzag.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7982/files/different_addressing_modes_of_8051.pdf
    • https://cdn.shopify.com/s/files/1/0432/3403/3824/files/illicit_movie_2017_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8084/files/34003280604.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/68698529916.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/aushadh_darshan_acharya_balkrishna.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/37636624228.pdf
    • https://cdn.shopify.com/s/files/1/0436/0850/6531/files/wogafugoxuxibifil.pdf
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/fanebezosogiworifaraxofo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/givigufulejawor.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_off00005c9d.bin
1943923b0d8886f97d8c7737b0be2da44d8ca7f2c89526b9ab20611ea8812715		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9D 4892 bytes
font_01_sfnt_off00006d22.bin
f9bd9af9c386266921ad730d91cb43f753d1515860fafd731879f7b10a0da740		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D22 10888 bytes

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