Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc6adc87a204eae5…

MALICIOUS

PDF

47.1 KB Created: 2020-11-07 11:42:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 05ddf78f7712c77e30140b7d996375bc SHA-1: 7d65c4db6fed0dd2735c3f569422873ce457b906 SHA-256: fc6adc87a204eae5dd1f68c2e9a932a912ec7ff6680b455870b466f8a303d29f
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/123?keyword=convert+all+footnotes+to+endnotes+word+mac PDF link annotation
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/2676791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367905/normal_5f902cb326b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450724/normal_5fa4adbe2e997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410030/normal_5f9af6e8d9ec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393511/normal_5f953b233f651.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5f8da55142f13.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/sugigilim-zivodoza-jubirime.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/fibesezati/dorijitilok.pdfIn PDF document text
    • https://tidesefotiku.files.wordpress.com/2020/11/bob_marley_complete_discography.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/15557920703.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/calendar_definitivat_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/7581877062.pdfIn PDF document text
    • https://gogabimujuw.files.wordpress.com/2020/11/82575258512.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/99833846922.pdfIn PDF document text
    • https://dumavud.files.wordpress.com/2020/11/mupepuvugif.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_off00007993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7993 5224 bytes
SHA-256: c577860d5bbdef997c0388fe666c8a9b74893c5160797d5f21e881866fc7e64d
font_01_sfnt_off00008b55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B55 10676 bytes
SHA-256: d7310d1314cb5a6e84a55f7e6824397eb0d3517c030dd5a378391c08bd516803