Malicious PDF — malware analysis report

Static analysis result for SHA-256 1942647bc89bbb8f…

MALICIOUS

PDF

39.9 KB Created: 2020-11-02 19:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: d3c2b30b991ca3172b9b72cd7fbd3529 SHA-1: 8235c50f6e035ed7e3c2ed4dd13c344c332f2661 SHA-256: 1942647bc89bbb8fc373159ef339504b1d46e002df7c3a5c1d2724f2bc7e2802
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://ggtraff.ru/strik?keyword=freeport+high+school+turf+field+address In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f8ac67441459.pdfIn PDF document text
    • https://siwinapevaz.weebly.com/uploads/1/3/4/3/134338690/274dfe78385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5f8a61b10cc10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379476/normal_5f9d71b9dd964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383702/normal_5f8f1507a8c30.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/51637127-766a-4446-8de4-a6f677da9cda/cartoon_animation_series_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c18f9463-1062-4911-8e28-9a3ac718e45f/5873508883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60662ae2-caa0-49f9-9320-bd9269ae6512/29558361679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ed2fdae-9a6b-4be0-bce8-209488d74e4f/tv_guide_appleton_wisconsin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8de9a7-18a1-4d6c-89f9-a5ee3c6b9049/mukitopexanepevixitaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a57a4e22-b6fb-4fbd-9b78-5573c4e78f36/25989620553.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/pexijegeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f11fdaa3-d915-4f72-970b-38e1c8c2096f/84641390634.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F25 5148 bytes
SHA-256: 46a66ef0c20fce9dc3b81d5307f4fc4b4516c0dfa43c60fc04579526e915eeb4
font_01_sfnt_off000060c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C8 10492 bytes
SHA-256: 21061d7e864cafe69c177b96dde7bc340c239623a596d5e4b5e3d4c58e7a7667
font_02_sfnt_off000084ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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