Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb230f385eb065ca…

MALICIOUS

PDF

38.6 KB Created: 2020-10-20 09:59:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f3eb6ac4ae395649c936798ef6f704a7 SHA-1: 2279dc749b22f23083b218b4f43ea303ef4187bd SHA-256: eb230f385eb065ca4d64daaefe0256b843c3b1922966019660381a5ea3771541
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=jabra+evolve+headset+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f8d6f62681c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5f8a993b4af04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5f879fc8d4f2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5f873aaa61700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377114/normal_5f8d17a5a36d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_5f872c29d3303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f8a7ac479fd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f8a2a12372a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f8c1c01c31b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f87321d5de35.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/6f786adf-c874-4e0f-8dd8-6f49d11a69c5/73072853797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62b2c5f8-daa5-417d-916f-00957d5aba42/20895759104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c898fd4a-9039-4e7f-ad66-750dbef5b6b1/xojasatomik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/67832468016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6316/3035/files/chemical_bonding_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3928/3608/files/sugadalakaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/malaysian_trumpet_snails_petsmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/4676553356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc27e4d-e52b-4b4a-859b-ea4075a44c19/zepetazekoxigesakasuwosup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/600a5b12-cdf6-46d9-8f9c-def8d0bc2dc2/50852398451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fb4206f-8421-4165-846d-4f3229a773fb/molixetadimuzugazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ffe6634-9800-4575-a389-90c22aebd414/suduzisozibidemamolef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d7b667f-591d-42bc-bc5d-b690764028c6/vumewubosusex.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_off0000587f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x587F 5252 bytes
SHA-256: d13211cb2f445991dabcc69301539b7cda8fa74de91ca3906d23ad6700ff172a
font_01_sfnt_off00006a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A34 10272 bytes
SHA-256: 049df5e53e3a29d6e130583056b477421fb770f97d4aa3b8b6d03fe827ffbbce