Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f6b4c6b62ee22d4…

MALICIOUS

PDF

44.9 KB Created: 2020-08-11 23:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9506643a50098f3e02f4a6cbe4b119c SHA-1: 1dc27363bd792fee0bd99bbb4a7d3a1b94bebc58 SHA-256: 5f6b4c6b62ee22d43a41a53884b08fcd83b1a803535024f2561094db1960fe3a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and heuristics suggest a lure to download a file, which is likely a phishing or malware delivery attempt. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=al+quran+pdf+file+download
    • http://files.lindabayfieldconsulting.com.au/uploads/1/3/1/8/131858661/3ccd7c57.pdf
    • http://files.avianatechnologies.com/uploads/1/3/1/8/131872105/3237335.pdf
    • http://files.traceybartlett.com/uploads/1/3/1/3/131383743/912b4144476e4f4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/1951/5557/files/sonaxibotefilidonuzu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/90328290902.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6285/files/benchmarking_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/28026160900.pdf
    • https://cdn.shopify.com/s/files/1/0438/7956/3419/files/85815531503.pdf
    • https://cdn.shopify.com/s/files/1/0451/0393/9737/files/gametek_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/prentice_hall_chemistry_lab_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/gobotiledegubis.pdf
    • https://cdn.shopify.com/s/files/1/0433/9551/4535/files/o_cavaleiro_das_trevas_hq.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/85008846225.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0724/files/bejes.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b54.bin
a0224754c770a4677ea4a5de74f566cb53a3bab9cd329922f3c15f81a08941f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B54 5064 bytes
font_01_sfnt_off00006cad.bin
9226671e5f3c58d9708eb25fc90ef45be74b1d0192e9d4cae62247cc47f5a492		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAD 10444 bytes
font_02_sfnt_off0000900d.bin
1bfdf9b618cc05b20a241fffd8f9aac7577c11cc8318445a218e09994d462d2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 16476 bytes

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