Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d57ea480d208387…

MALICIOUS

PDF

34.3 KB Created: 2020-11-08 01:14:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 8b14abb0bf2bec63fac2683ecf14f550 SHA-1: e865459e47b175dfee39fad6131c57b726c9ab8d SHA-256: 6d57ea480d208387ee3d95b895de22372370acf7cca96f62716cf37543f10eeb
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://traffking.ru/123?keyword=words+with+nof In PDF document text
    • https://gobexuxiwabi.weebly.com/uploads/1/3/4/3/134372757/b8a2176fb.pdfIn PDF document text
    • https://betutinixe.weebly.com/uploads/1/3/4/4/134481053/7208636.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/jejezuwowukofo_bawosufo_pigefenega.pdfIn PDF document text
    • https://rixapozati.weebly.com/uploads/1/3/4/4/134456921/fowuwomireligij-jotag.pdfIn PDF document text
    • https://sagekafota.weebly.com/uploads/1/3/4/3/134351395/jizadanewimofotalat.pdfIn PDF document text
    • https://vezorobabuwej.weebly.com/uploads/1/3/0/9/130969079/xesob-wonuxosowavufi.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/9d01d2.pdfIn PDF document text
    • https://sogovowezop.weebly.com/uploads/1/3/4/3/134324678/bekiwir_jomesemetav_pavexuwosemomiz.pdfIn PDF document text
    • https://jarofudi.weebly.com/uploads/1/3/1/4/131408364/13175f4fe132e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/baxunaf/a_written_plan_of_government_is_called_a.pdfIn PDF document text
    • https://xanafegeze.files.wordpress.com/2020/11/49035677209.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/57430915687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdc39217-1f1e-469b-9f93-731d6b6e41c7/59441462026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/405ae762-54d5-4834-8f8e-979aa0d47151/93315419863.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_off000047a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A1 4860 bytes
SHA-256: a9cc5d620c6e8fec9750f807ddac8aefdeec7c616be7e3934ae441b39d5e4a1f
font_01_sfnt_off0000583c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x583C 10960 bytes
SHA-256: 64b058623e65dc3a0f57017475ccd840fb0f0e9bd890360722c962f819525e25

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