Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aebcbdfae6f386e…

MALICIOUS

PDF

47.3 KB Created: 2020-10-16 20:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: afed094bca54f985923abdf7b386e622 SHA-1: 26e6618fc567a83b2420d7c07a159c6ef57f8b51 SHA-256: 3aebcbdfae6f386e7200a5e4332d730ddc0fea57855edaecdcb15a224acdfc6a
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/123?keyword=iphone+6+plus+manual+network+selection In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f871030700d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_5f89c93c9628f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f891e7496715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f88b5e6441cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f876412b21b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f874dc482efc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372382/normal_5f89b8c1c19e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374851/normal_5f89bbe57db76.pdfIn PDF document text
    • https://sekojufakov.weebly.com/uploads/1/3/0/7/130776719/xodenog-wezapojewaju.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/25bc0524621.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/vizajo_luzirofonedona_biwutoje_vufikopop.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/a7db2153-5866-467d-a70e-2b12bdf69dd0/mutimazufedexilenofugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70d25d09-1fbb-4ff8-b1f7-7e908626d103/fusokejarezazipatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b80cc1e2-2b5c-4bcf-b964-c6edd8f0729b/zilazerudepipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06efb15e-a400-485f-855e-3f9b76e292be/saxirojewimonuvajejugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d284eb5e-e9b3-4499-998c-cc20bd2f4ba8/kepukamegarivopebadebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a473b4be-1977-4941-bc02-ca008212aef6/pipuwaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b235319-f957-4176-9178-6c74886e3058/26853969643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/044f3581-52b4-49e7-b295-bffc54a4eeb2/78113046396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a12c747a-aabb-477d-957f-6db4c0419aaf/divawawizamaxunuwojukosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d9a2e11-107f-44c9-ba74-71da5e912e90/galerodagudinibonejine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eb7fed0-b30c-4505-bda2-820fbc5d0619/detefagefinaniveta.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_off00007a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A13 5420 bytes
SHA-256: 83107eb933f0c255f0768771c89aa25b41b965d0acff8049505da32182c8ed36
font_01_sfnt_off00008c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C55 10404 bytes
SHA-256: 37ec78b6ee97f7b806b2213ae59e4cdb034459240e3b92e594665e6e57ad7457

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