Malicious PDF — malware analysis report

Static analysis result for SHA-256 a032286940ef3825…

MALICIOUS

PDF

45.1 KB Created: 2020-10-29 16:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: bfcb0a1f59f9ecc32d41a975675ea429 SHA-1: 96a3149c48267e5a21f8eb1dca3aa2500e6d6eb0 SHA-256: a032286940ef3825c312dc5e916d9b7216caf79ad8bdfaf1bd56af4ab683588c
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://gettraff.ru/aws?keyword=ghostbusters+just+dance%25EF%25BF%25BC In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384835/normal_5f8ee1e2aa231.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5f8c7b27cc002.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/wilugugo/early_civilizations_timeline.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/44971000906.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/the_lion_sleeps_tonight_ukulele.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/61161319265.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/zonobagatelifuru.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/caudillismo_revolucionario.pdfIn PDF document text
    • https://s3.amazonaws.com/sirasu/korean_vocabulary.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/functional_occlusion_from_tmj_to_smile_design_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/websites_to_watch_free_movies_yahoo_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/solstice_and_equinox_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/27130727405.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/canzoniere_saba.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/peruwusima.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_off00006ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE9 5248 bytes
SHA-256: 6bc837c7400805b73f94b8be4a71aa25d7d63c18ba1d9eee4cb492754a71730e
font_01_sfnt_off000080c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C1 10860 bytes
SHA-256: 09544e071a6f66bce211258b58742fdab4845cf17329b278b8c97c017fd8ba50

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