Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a63ceb6bdfade0…

MALICIOUS

PDF

45.1 KB Created: 2020-10-16 00:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5e5b13a4a47a3cd70eea5c62651470e8 SHA-1: 754c144197d1bdf5113d540ba88ae387a5220e62 SHA-256: b7a63ceb6bdfade0bc4633667c062372ddd8e2c628d1f7b82f1eaf9e32f2e1d8
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://gettraff.ru/123?keyword=britten+simple+symphony+viola+pdf In PDF document text
    • https://site-1043767.mozfiles.com/files/1043767/welawukazaxibatox.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/mabapigar.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/bc44ba.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/wudaregodaf.pdfIn PDF document text
    • https://popilezofale.weebly.com/uploads/1/3/1/1/131164236/sejudikeruwojipuvedu.pdfIn PDF document text
    • https://site-1039570.mozfiles.com/files/1039570/11332145053.pdfIn PDF document text
    • https://site-1043669.mozfiles.com/files/1043669/jiwiketitoginajebusa.pdfIn PDF document text
    • https://site-1048292.mozfiles.com/files/1048292/20507021581.pdfIn PDF document text
    • https://site-1037850.mozfiles.com/files/1037850/58184768507.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/59014f0f-6abe-44fa-bd5b-ae1237263fce/93513730661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd754229-fc20-47e7-a637-b1b752912366/52281234272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94bb268d-3c46-4c28-baa0-61182a79a89d/najukinuxobesujugirasol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9151/6310/files/46339305175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7011/9318/files/two_way_analysis_of_variance_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1841/9349/files/pertumbuhan_ekonomi_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/2019/8559/files/80942863746.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2c98019-fa15-42d4-bf71-946e1fc188ed/mamipovipegugut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0d10e3-03f7-4234-b32f-ed069a93acf6/45932427204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b563f63f-4f2f-44f4-99be-5eb1bcdc431d/sivano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ab7ce49-efe5-42c9-b749-19548c362462/58092846495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f27546ee-2f03-485f-a1c0-7d80840da1b8/zatom.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_off0000687a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x687A 5492 bytes
SHA-256: 1a3f3ea3a598fae15fc9ab6896f0a88644de5458a12f3e554c61ef2e1bbd658b
font_01_sfnt_off00007b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B03 13968 bytes
SHA-256: b0a0fde5032280aeda0eed2105bf9a9326ca4b3f578c8dece573a75df277e7f2

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