Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b745b7ce0056ca4…

MALICIOUS

PDF

34.8 KB Created: 2020-10-31 16:25:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 5ae8c3fc7961285ce5871d9c56a35b01 SHA-1: 756ec95aeba4b822f2dbd07eee1a464014ebd588 SHA-256: 3b745b7ce0056ca4733936457f536f9502e040485fadb5feaee81d5b4669bfa7
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.me/123?keyword=faces+of+astronomy+webquest+earth+science+answers In PDF document text
    • https://todijaxazifaro.weebly.com/uploads/1/3/4/3/134342800/fopojez_fixagaxuvaked_donunel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385030/normal_5f9ca6748d517.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415929/normal_5f9816299b2be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412757/normal_5f96542f751a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f8a0835c962d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388293/normal_5f9442c52de89.pdfIn PDF document text
    • https://naletonuve.weebly.com/uploads/1/3/4/3/134381452/zapegi.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/c1018bab-4f26-410c-a756-becdb34085db/62876304095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3739/1558/files/viboruzisajale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7364d0-c72f-4e53-9ca5-9fb02bb7f05e/jiredafovumawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5683/1905/files/kenmore_600_series_washer_wont_spin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e5fe64c-2c21-48d0-bc31-ce257d497c7c/riduzadijijolunubore.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/hunger_games_google_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/payment_methods_in_international_trade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8365/2008/files/57620973836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/4448/4250/files/8916564046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2419/8050/files/800996381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a4140d1-6cab-4276-b96a-76978829bbcc/phrasal_verbs_exercises_printable.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_off00004b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B15 5504 bytes
SHA-256: cdd47bc2a7a83238211540540723239c33b5a595846ba2bfc82251c3a2f2ff4d
font_01_sfnt_off00005dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC4 9400 bytes
SHA-256: 9ccc373effcfb9c5d7ab7647f282e268ca575bf19a930f7abaf4db1d3d9be3d3