Malicious PDF — malware analysis report

Static analysis result for SHA-256 0677101be5d16920…

MALICIOUS

PDF

62.0 KB Created: 2020-10-29 20:25:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 3555c8a8e7fa1f9243f78d9c9e7f2033 SHA-1: 2e62bdc1dbbf02f42d28a5d0f71889ac568c4d76 SHA-256: 0677101be5d16920e1a9d18457a2c3f25993677c62e5010830bd97193057ca67
134 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/123?keyword=miyoni+by+aurora+bunny In PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/mofamavi_salakesu_sesiguno_rogut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368467/normal_5f8c0bb42117d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389353/normal_5f9054d8cdb19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f94bea5b8ce8.pdfIn PDF document text
    • https://gidujinogojavu.weebly.com/uploads/1/3/4/0/134096303/942b16259d357.pdfIn PDF document text
    • https://kibutabez.weebly.com/uploads/1/3/4/4/134438896/b3bdce8a7097d9c.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/334cd7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_5f9a619783e17.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/bazel_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f992f30-08e9-4a7e-b92f-811817bc5779/38436675264.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/foxobinob.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/14372833940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/242dcb67-8eeb-4e49-ac2d-d3186501748e/wubasuwebujebageki.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b7df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DF 4716 bytes
SHA-256: 53120b0839b395dc8ed4677065512241fe3c837cb50d5561f398ba3764fe5cc4
font_01_sfnt_off0000c80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC80B 10388 bytes
SHA-256: f7bb781a7d0d96be34b2ce599d59c3bd2a5b161c8804b1be4f16342c3cf36f41