Malicious PDF — malware analysis report

Static analysis result for SHA-256 30be2cdb620174ff…

MALICIOUS

PDF

41.1 KB Created: 2020-10-17 08:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a155d6e9d7f3cfb4ea1424366352917e SHA-1: 6a29033c72ccf6a6d61c59236e4d3f902e1f53e5 SHA-256: 30be2cdb620174ffd4319b2aa1a4d40fa14f865a6c759bbb2ee9d4b82557668e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=hollow+knight+abyss+lighthouse In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/bofajifolapumalij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5f89d1ae48d9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f873133d54fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5f88ac3e5fa24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372721/normal_5f8a4fde01c9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3955/3696/files/77299453518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0780/3029/files/pokemon_emerald_emulator_for_android_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/8th_anniversary_gift_traditional_and_modern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6153/8727/files/everyday_mathematics_grade_6_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9541/5189/files/ganexavenex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2204f3b5-392c-489a-887d-3b11f6f9b099/14169862162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4061/0730/files/convert_to_excel_small.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5317/8791/files/what_are_some_problems_in_panama.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_off0000638a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638A 5208 bytes
SHA-256: 82d5005d72174952b428e78b5d3698b9becb49fbe7dd43e5f1c2d6ef6d7e128e
font_01_sfnt_off00007555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7555 10048 bytes
SHA-256: 7556bca0887d0ff71f888831c4076ed337d50818eaf4785ed362b06abe017d22