Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df2107dfe55cd1c…

MALICIOUS

PDF

43.5 KB Created: 2020-10-26 18:55:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e3a3f9a53d5a42b53bd9fbbc723d5000 SHA-1: e60b812a7599b7a804b9286ba0a755190797051c SHA-256: 3df2107dfe55cd1c3269275a482b5f4f1acb5daf95b99e845e772a3663528356
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://cctraff.ru/123?keyword=binary+options+blog In PDF document text
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/012bb4c81a0.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/jatijigofaku_ludozewu_bivotan_rowix.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/doveredupunukanodip.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/xijupuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383574/normal_5f8cb111cb81f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f95d241c17ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f9559ae9657f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369324/normal_5f8a42b92ecfb.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000069e1.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000069e1.bin)
    • https://uploads.strikinglycdn.com/files/11789a3c-2215-447c-a5cd-93e34ec0eebf/40598129152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1adff818-7009-476e-ad6f-0307da64cb94/indesign_cs6_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc2030c2-7d32-4aec-9245-2bd3056ea22e/22160500963.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/advances_in_materials_science_and_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/79342657171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d05d962-8553-48d5-9e59-39ece67054ae/food_packaging_principles_and_practice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b856411-f80c-4028-a354-01993c72bb35/54892006405.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 extracted file (font_00_sfnt_off000069e1.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E1 5280 bytes
SHA-256: 543baab819dc2d4a171db2535dce298b2ea5536b6e49d87ac29453aedf967ec1
font_01_sfnt_off00007be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE1 11052 bytes
SHA-256: d14d9dce5ab7c37804b6925d8e4480be4b380327c2036a85653b766ca898788e

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