Malicious PDF — malware analysis report

Static analysis result for SHA-256 9adbb4e7d36f36bc…

MALICIOUS

PDF

39.1 KB Created: 2020-11-07 23:31:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 311d2700cf97235ad6c1e3a31c8f7293 SHA-1: 21dcd4229a56c275dc30c80f5c7f4d9b57b8aa85 SHA-256: 9adbb4e7d36f36bc543f9ae05c45f9d1822de985bd7ffccd1ef18bbe45edd272
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://trafffi.ru/aws?keyword=aleks+math+for+college+readiness+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383688/normal_5f8dea56907a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393752/normal_5fa5c088373aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388183/normal_5f96db738bd35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5f8900dc4cfe1.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/narolitefiz_gasapatasoda_mepenitaxux_nivegituju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_5f9642a16d305.pdfIn PDF document text
    • https://mofivekirupu.weebly.com/uploads/1/3/2/7/132740685/71d86a1.pdfIn PDF document text
    • https://defutijobazaso.weebly.com/uploads/1/3/4/5/134587482/3631297.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458404/normal_5fa1ef95243ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://totejefuk.files.wordpress.com/2020/11/westworld_season_2_episode_2_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/broiler_farming_manual.pdfIn PDF document text
    • https://mepugen.files.wordpress.com/2020/11/championship_manager_5.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_off000057d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D6 5580 bytes
SHA-256: fd8201d6423912d9e5817ca7175dd5541188efe4124b0d9bbb1915635d1c87f5
font_01_sfnt_off00006ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB5 10768 bytes
SHA-256: c915475980f8bfa8ca2565d3b7d11f735d91efb27f0e1dbccf0f0f01728e217a