Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd54d144d9ebdd4f…

MALICIOUS

PDF

46.9 KB Created: 2020-11-02 07:29:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: fd9acd50fdeec1c98760f84addb85452 SHA-1: a5857955c15bdcf5f625054c98fe02e1c511b478 SHA-256: bd54d144d9ebdd4fd3bed203006b8032db6b7c18d35bbbe6d7b4be0c137901a2
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://ttraff.me/123?keyword=blue+coleus+plant+information In PDF document text
    • https://xekixudag.weebly.com/uploads/1/3/4/3/134336078/gilukimawu-jepir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5f893dd5f0d20.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/a61639a9d.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/02f48d97-02da-4714-8f82-044dc638bd48/wabakunujeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c66a2c-d2cb-42b6-a24d-2c83154e6065/setoloxu.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiwovowus/nexekurufuworaponexumupa.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/warehouse_safety_signs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5436e3fc-ef41-4ffa-aa78-2058f3d5168a/hallmark_ralphie_ornament_bunny_suit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dad4ccd-e808-44e0-999a-fdc1783c2fe3/tetasorogagobopawuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b7f0cc5-c4ef-4633-8cd6-7f6aa3cb8009/posew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de6eb6d5-2d97-45ef-9444-12a44930bbc3/79280049905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8080bb24-aaf3-45b6-adbc-aea4683f69df/49482984934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1ae72a3-5d01-4818-81a0-6ffe6ac6df3f/tamil_rockers_2019_movies_isaimini._com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db63f153-6392-4bc4-9973-c77a35e4c358/43468994877.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_off000076bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BC 5212 bytes
SHA-256: bf186516d56760190f8448f3673a03778dba1319dc1406d67d070abcf5ed0b1c
font_01_sfnt_off00008864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8864 11928 bytes
SHA-256: c8600f51b32f313051df43ba87ccd0e774ec5ee13c47b0e7bccddc743b894721

Open this report in the interactive analyzer, or submit your own file for analysis.