Malicious PDF — malware analysis report

Static analysis result for SHA-256 1561d71783e2f00e…

MALICIOUS

PDF

33.8 KB Created: 2020-06-07 07:17:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 976ab3da26a1f40c63060c4a5784151b SHA-1: 651f6ab82863aaf2402eb371a8f2e141e7aef234 SHA-256: 1561d71783e2f00e9c7488b0288fabb82544936d9f55cf73a319b968fdf4e30f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains, suggesting an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://host101.carmichaelnl.com/uploads/1/3/1/4/131408008/131408008.html#eva+brogeland+laache
    • http://valwestinc.com/uploads/1/3/1/4/131437601/kimuv_ruduzogilanurav_mezesibo.pdf
    • http://anuep.com/uploads/1/3/0/7/130739944/1865791.pdf
    • http://barnesebayer.com/uploads/1/3/1/8/131857213/1242973.pdf
    • http://happylearnerspreschool.com/uploads/1/3/0/8/130874156/1543223.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://xakogetezi.files.wordpress.com/2020/06/zevubosefixamakidagiju.pdf
    • https://nelujepi.files.wordpress.com/2020/06/30962456595.pdf
    • https://lesijasofu.files.wordpress.com/2020/06/35697690425.pdf
    • https://sekuvek.files.wordpress.com/2020/06/favevujutotaba.pdf
    • https://kaladamovala.files.wordpress.com/2020/06/modulebidirijuwas.pdf
    • https://kozaxijewob.files.wordpress.com/2020/06/19145951809.pdf
    • https://zitipon.files.wordpress.com/2020/06/degajajebebiz.pdf
    • https://jexoxaluk.files.wordpress.com/2020/06/pedid.pdf
    • https://juzomore.files.wordpress.com/2020/06/61045202279.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000533f.bin
131af355900b8339986fb57bf8b89c67fb256ac8498237fc6f3367e0420b7356		 pdf-font-stream PDF embedded font (sfnt) at offset 0x533F 12960 bytes

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