Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07382149d2ba158…

MALICIOUS

PDF

30.3 KB Created: 2020-09-28 16:16:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 031d9fff675aeb7c9ed42471984fa01d SHA-1: 806dcf623af5fef14ff33f89b92b011ab31c15d7 SHA-256: f07382149d2ba158b99b6bb0896f58a5a7fd15af2e578a0f552c22ec21276e9a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary heuristic indicates a malicious redirector link, and the document body, though heavily obfuscated, contains URLs that are part of this link farm. The ML classifier also strongly indicated maliciousness.

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://ggtraff.ru/mozel?keyword=types+of+drag+in+aircraft+pdf
    • https://site-1037026.mozfiles.com/files/1037026/12665014576.pdf
    • https://site-1036629.mozfiles.com/files/1036629/tidobebinutet.pdf
    • https://site-1036627.mozfiles.com/files/1036627/kurawapatodokowuwapafim.pdf
    • https://site-1037279.mozfiles.com/files/1037279/58499417022.pdf
    • https://site-1036818.mozfiles.com/files/1036818/xagutorutanejifisitazig.pdf
    • https://site-1036975.mozfiles.com/files/1036975/mamijijudogazewadovix.pdf
    • https://site-1036798.mozfiles.com/files/1036798/73416709187.pdf
    • https://cdn.shopify.com/s/files/1/0437/9626/7168/files/default_index_html.pdf
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/3171268565.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.pdf
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/rovidafe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/fujojidolax.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_off00003eb5.bin
7e740cac59b426d0e2513030181cb2ecc6d4d352e100a7323f9dcef2d270ea4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3EB5 5340 bytes
font_01_sfnt_off000050fd.bin
390b5017504168b7fbb32eea979728f9a8b5fd20457313af973cac739cb7af5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50FD 8256 bytes

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