Malicious PDF — malware analysis report

Static analysis result for SHA-256 2babd15c8a2cdc7a…

MALICIOUS

PDF

37.9 KB Created: 2020-11-07 00:55:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 0dea77fd15901be0dc7a3bf1152cb71e SHA-1: 2277c311d4a06a6b51c3a5aedd87ae7176f9e3bd SHA-256: 2babd15c8a2cdc7aac3cdbd9fba16e1cd70792620e4e9affc9e4694f1158adc3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/aws?keyword=customer+po+number+in+sap PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367289/normal_5f873b974794a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5f8a577e02cb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/27ade7b7-d5e0-4009-8289-032c9ab77407/74909563097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/022d6f2d-43a4-4a10-9339-d9babecca1b0/sifapopax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/620158cc-d49f-466f-955d-8a2cf2e21524/tapunufebedimizowiraw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bdf3a39-4675-4d45-9943-4d42e81e241b/34159682068.pdfIn PDF document text
    • https://vojutone.files.wordpress.com/2020/11/zajikasosanivapiwud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a086f05e-e961-43ea-b733-396fc1cea574/zujoxopexutalejixagop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79ae26c8-95b6-4a49-8b73-bef7c6714e0e/23184918784.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/541215af-b03a-4648-8023-7a137d91ed1c/finadijewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e109ecaa-186d-4d1a-9fe4-72696077e1a7/16342295556.pdfIn PDF document text
    • https://mukomeremit.files.wordpress.com/2020/11/xuvibugugosun.pdfIn PDF document text
    • https://wugetiw.files.wordpress.com/2020/11/92882634446.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46EB 4976 bytes
SHA-256: f7eba65cce7f30307f790a887f6cebdee79b732086fd1444fca9e65a8e0c138c
font_01_sfnt_off000057b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B3 10944 bytes
SHA-256: 9659056953ffe737bc94d6c68a10d0c129bcfe0622dc13e740dc722d53565cf2
font_02_sfnt_off00007cce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCE 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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