Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbac5ea34ddc01b0…

MALICIOUS

PDF

34.7 KB Created: 2020-10-12 13:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cdfed0de71cfa00e9a5e40cb6a4c67e4 SHA-1: ba069d0f01468666f2b62b9e7636ef3646744d0e SHA-256: dbac5ea34ddc01b0a33868cf8b1c4efbde9ed1f29cb8d0d5f2b53d62d5913560
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ggtraff.ru/strik?keyword=fashion+style+guide+for+body+types In PDF document text
    • http://zuwitif.staychampaign.com/uploads/1/3/1/6/131607407/wubumedeteputo.pdfIn PDF document text
    • http://jovul.johannakeehn.com/uploads/1/3/0/8/130813765/1480d67551.pdfIn PDF document text
    • http://files.aboundingfaithnj.org/uploads/1/3/1/3/131383771/xosorizin.pdfIn PDF document text
    • http://zibujen.lakeodessaarts.com/uploads/1/3/1/4/131454215/tosivepekivo.pdfIn PDF document text
    • https://site-1039360.mozfiles.com/files/1039360/34650793497.pdfIn PDF document text
    • https://site-1037859.mozfiles.com/files/1037859/detelafum.pdfIn PDF document text
    • https://site-1037057.mozfiles.com/files/1037057/3711075988.pdfIn PDF document text
    • https://site-1039703.mozfiles.com/files/1039703/26653574566.pdfIn PDF document text
    • https://site-1038768.mozfiles.com/files/1038768/tupawuxumonogiwajuwazej.pdfIn PDF document text
    • https://site-1041207.mozfiles.com/files/1041207/53480045455.pdfIn PDF document text
    • https://site-1043494.mozfiles.com/files/1043494/wojigofibuxivikazifenu.pdfIn PDF document text
    • https://site-1042271.mozfiles.com/files/1042271/puluxajiberekenijogo.pdfIn PDF document text
    • https://site-1039209.mozfiles.com/files/1039209/75070569094.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/c2a1b185-a611-4eda-854b-d524834a0a53/nasufexenerokurarajon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d76cd0f-f524-4d9f-88e0-73041bc8eae4/45147540163.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_off00004a60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A60 5500 bytes
SHA-256: 0817e0c4fa0b3b2fcfb5ba844d3fe66bcccfb947d6f315fe9529c09f27038975
font_01_sfnt_off00005d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0C 9636 bytes
SHA-256: 63e672ff16c4f8093176347533fcd10bcc7e91566dcc3266e85267c6fa4bb9a8

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