Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ada1288602e4af…

MALICIOUS

PDF

40.0 KB Created: 2020-11-08 18:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2aa9d574d24308714958e52870fc8e1d SHA-1: 80a3f35d64b70b71d635e5ffbcd9edd6f332a208 SHA-256: b6ada1288602e4afc6f302c31c8a1dbfd6bb98ccffd80aab5f26270addf528ec
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 https://traffset.ru/aws?keyword=battle+fish+unblocked PDF link annotation
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/wufiteduzilolagasavu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f870e3f95294.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb2a2f3c-0d90-4871-94b9-8e0d953e38d3/derogawatipoweseses.pdfIn PDF document text
    • https://gozevawu.files.wordpress.com/2020/11/nipukovidi.pdfIn PDF document text
    • https://gaduroso.files.wordpress.com/2020/11/pemefewegufavi.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/appsc_group_4_previous_papers.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/86275023987.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75e81469-124a-4331-b6ee-e04ac4bf1905/68303022668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faacdfa9-92d8-49e0-b3c5-7163c30b5521/68255245675.pdfIn PDF document text
    • https://borivul.files.wordpress.com/2020/11/39154178052.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_off00005e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E59 5264 bytes
SHA-256: 623cde7709e6660e6219f5047b3f0b0ceb35cd8b808872f8a26b3153741a08be
font_01_sfnt_off00007043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7043 10380 bytes
SHA-256: 3f69ee5472b24a782e8517517cafa5f55fc7750eac71ff659ee001f2a9df2db6

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