Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ba4c2320105efc…

MALICIOUS

PDF

44.8 KB Created: 2020-10-24 14:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c56054cd9aba2267fac0a08dac1030a3 SHA-1: edadabf9f762cb276a3bcc46a117584f9ace377c SHA-256: b6ba4c2320105efc97589a38f4e0479b074507e592818512e8a8f950bba5cee8
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/pify?keyword=land+pollution+project+pdf In PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/wevunugejerusu_vidusodevo_mofese_wubefu.pdfIn PDF document text
    • https://wibugosavuzatug.weebly.com/uploads/1/3/4/3/134349607/081c49a635a5e.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/tusiwisotoloko_dizofipa_nuxer.pdfIn PDF document text
    • https://zefufewik.weebly.com/uploads/1/3/4/3/134374544/0d79875.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405945/normal_5f9389472a73d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377647/normal_5f8a5b5399ccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373502/normal_5f8d3c241bf9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_5f8854b230dc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f8cc54347a75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378149/normal_5f8ba1fbe4582.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000725e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000725e.bin)
    • https://uploads.strikinglycdn.com/files/cc3fca3b-0daa-47aa-bcb4-80ab7ea8fae4/14571614215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c1e8ecb-5436-42bb-8343-1b7fddbadea4/xajigepezezowumifiram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3454a78b-7792-446c-a7db-4703ab2ebcf5/jalimobomusutax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2faf884c-6fcd-45a6-8cd1-d3668ddcb5e0/48683378279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4172/files/59973514060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3838/7607/files/windows_8_features.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5978/1023/files/32162372134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6001/0912/files/euchre_3d_cheats.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_off0000725e.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_off0000725e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725E 4988 bytes
SHA-256: d328fc6429c91afd6e03a9524d968a52acaf8242423ae1fc399f532e33d4e363
font_01_sfnt_off0000836d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836D 10212 bytes
SHA-256: d7f709095672d20108288a4917d33fc863c5dbc603da53d62971213e8a2c4b9a

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