Malicious PDF — malware analysis report

Static analysis result for SHA-256 39078697bb658a6b…

MALICIOUS

PDF

61.7 KB Created: 2020-08-12 15:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62e5f4aad3d3ed2175eb02f8e70ece66 SHA-1: 8ab4387cb7ce9202131845c3a9e383e5763f9bc2 SHA-256: 39078697bb658a6b4c871173ec2989b1b609551ff06a70a1bc863b87dedb9c99
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'self esteem journal articles pdf'. The PDF also contains a large number of external links, many pointing to Shopify domains, which is characteristic of SEO link farms used to distribute malicious content.

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/wb?keyword=self%20esteem%20journal%20articles%20pdf
    • http://files.djsfurniture.ca/uploads/1/3/0/7/130776619/76d7faa3.pdf
    • http://files.artfromthepost.com/uploads/1/3/1/4/131438002/fomurot.pdf
    • http://files.kiamichcouncil.com/uploads/1/3/1/4/131408209/5039570.pdf
    • http://defod.eteambuilding.co.uk/uploads/1/3/1/8/131856158/aff871a2bdc0053.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/96385019365.pdf
    • https://cdn.shopify.com/s/files/1/0432/6414/7609/files/borderline_personality_disorder_traits.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/51093984371.pdf
    • https://cdn.shopify.com/s/files/1/0433/6212/3941/files/50438895552.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/36516659261.pdf
    • https://cdn.shopify.com/s/files/1/0432/6899/7283/files/momokufugotasanivozowa.pdf
    • https://cdn.shopify.com/s/files/1/0429/4311/9516/files/jorojupisafadezixidesig.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/43865736494.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2510/files/50524138945.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/73023631438.pdf
    • https://cdn.shopify.com/s/files/1/0444/1836/7654/files/forex_bible_free_download.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_off0000a5c8.bin
8ea889fcc973feea31725d284666e6637a5c47e34fcd62523fa8eee5a7fa0c3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C8 5360 bytes
font_01_sfnt_off0000b7e5.bin
c196388b4e0da1280b914d5189042374c1cd87cfd2ad5867eebeb63e6fa59777		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7E5 10564 bytes
font_02_sfnt_off0000dbe8.bin
781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE8 4324 bytes

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