Malicious PDF — malware analysis report

Static analysis result for SHA-256 49914d26a3eb44ce…

MALICIOUS

PDF

40.9 KB Created: 2020-11-09 15:59:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 552c01678cb9dfa9d48b47b9fd4fdba8 SHA-1: 8082f7319b35b1ef8af0ebe3328e42d6aca670e0 SHA-256: 49914d26a3eb44cef4844a505cec443386da9465215b91ae601f4f400a3d0e82
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://trafffi.ru/aws?keyword=sean+hannity+flowers+1800 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370543/normal_5fa188f1a4a79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380070/normal_5f8b4c877e99c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421788/normal_5f9b630c7bb02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449616/normal_5fa906ba8946f.pdfIn PDF document text
    • https://gokejubekilebu.weebly.com/uploads/1/3/4/3/134376129/bobuxe.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://s3.amazonaws.com/sojuravewi/33325171092.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/zituvamawefudepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/315ad645-97c1-4c1f-8625-d776438a581c/binogilibewaporun.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/fejovanawu.pdfIn PDF document text
    • https://s3.amazonaws.com/zukukelejurotef/team_viewer_fullprogramlar.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_off000053a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53A6 5328 bytes
SHA-256: 3dd80877f605ca909d36eca494a4a0abeabccf620583d35f9ac9f171e2054f1d
font_01_sfnt_off000065c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C5 10472 bytes
SHA-256: fb494f259dd916cf11c010dc9eeb35e591b1dae67fff16e5330b9108802ef306
font_02_sfnt_off00008955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8955 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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