Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c4e99cb4212adf…

MALICIOUS

PDF

49.7 KB Created: 2020-10-15 11:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ded16b4fa460376caf6bf28898ff5122 SHA-1: ff7d922a5e72677f6ce156a492aa64e5389498da SHA-256: 92c4e99cb4212adf02f35aaf2980361a760dfe621497a97d8ed3c9a4c784ba1a
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://cctraff.ru/strik?keyword=business+proposal+for+sponsorship+pdf In PDF document text
    • https://site-1048481.mozfiles.com/files/1048481/vomigusotomejamim.pdfIn PDF document text
    • https://site-1043770.mozfiles.com/files/1043770/45673028324.pdfIn PDF document text
    • https://site-1040321.mozfiles.com/files/1040321/89549760952.pdfIn PDF document text
    • https://site-1038744.mozfiles.com/files/1038744/piloloxoputavivalulomunik.pdfIn PDF document text
    • https://site-1042679.mozfiles.com/files/1042679/43629749526.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/2ce09bf0ca48.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/3444213.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/ec5bf50.pdfIn PDF document text
    • https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/sadokuxarezug.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/5bde227674ac4.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/lefexoserizemojogi.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/96582ad9-a7c9-4972-b47c-8b352bf66740/gojazigujasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2288703-c02d-4cce-a0b7-4e539ca28e23/lajatav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f6bd0ae-3c0b-454c-a6dd-f9fe318d6a59/75009320117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/415dcdb4-1f8d-48a8-94f7-481bb56ecfc6/23898503813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79f37b44-208e-4324-a472-9e50a6db2374/wuwozususu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8553/5648/files/77347823011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0302/1984/files/girl_scout_facts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9865/0789/files/types_of_social_movements_in_india.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2372/0602/files/accounting_chapter_6_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6180/4693/files/53583043828.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

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_off000083aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AA 5180 bytes
SHA-256: f9fbcb86725ca7e3bd8a19df71dc09c515b7881eb389dc05d3bf6da2fd3ae10e
font_01_sfnt_off00009533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9533 10748 bytes
SHA-256: 5026ea2dd8ef1990100a7f7df5cbf05cf0695f701c0369d6cd41b09ab4310292

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