Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e836be744fe074…

MALICIOUS

PDF

43.8 KB Created: 2020-10-29 17:19:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 3ecf1875156258e2cff92c6b45859e7d SHA-1: d1e23bfdc0f4dcea561a5abe28ce72828e4f1040 SHA-256: c6e836be744fe07465fd47a353fce9b675ddddcc7783df274332915c325c3a47
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/aws?keyword=family+feud+auditions+south+africa In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5f8c62ee37d74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387037/normal_5f92136b78e5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383692/normal_5f90f3a8b5cd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f94f3dc25201.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391009/normal_5f9319d08f723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f95406900351.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c66.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c66.bin)
    • https://s3.amazonaws.com/dazemi/soziologische_aufklrung_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aac83090-2ac5-40c5-9a8b-4e40e8b26742/jarubokekol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9512d54-904f-428a-a08d-587b423ac704/naruto_episode_1-_220_english_subbed.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/javascript_ajax_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/bizikedekalavaralopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c59c378a-34dd-4b5f-a5b0-29c29aad6b39/jixasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1696/4264/files/bilulutaromogilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5629/8656/files/android_install_apk_silently_without_root.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c14b5f26-43c3-4307-a3e5-9bfcc59b0ed0/holt_california_physical_science_textbook_8th_grade.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_off00006c66.bin)

Related samples 6

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_off00006c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C66 5320 bytes
SHA-256: 35a9d54851e4cb5e0a1e0fe67a5c5f6eedbe3b51df01bb9e496bfa1caad205ad
font_01_sfnt_off00007e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5F 10684 bytes
SHA-256: e1faadca56763a2fa8957b458cc7c1284e6f31c058cbb0ffe2b795d8afdcf057

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