Malicious PDF — malware analysis report

Static analysis result for SHA-256 364ff8249f20d019…

MALICIOUS

PDF

43.0 KB Created: 2020-10-22 22:13:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: b70b6a4b47dcda4eb822761be93f6fe1 SHA-1: af8081da81f7ffc5a2b4ba6497471a5866e87075 SHA-256: 364ff8249f20d019216e5c610432dab2fae06564d9068bbbb129ebbb921f723e
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/aws?keyword=activated+sludge+plant+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_5f8c73379b5bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384463/normal_5f8f27366dc59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390660/normal_5f8ff402aa5b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f8ecc753ad19.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/8d8a303496e8cf.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/zabajufu-femudana.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/tujimuxegexug_mekikizo_towekarevi.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/7877265.pdfIn PDF document text
    • https://sitizoxibe.weebly.com/uploads/1/3/4/3/134317871/siwasebanavujojer.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/5176519.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f8995b43e65e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375704/normal_5f89b2e790a9d.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/a5f88d1b-0264-447f-b8c7-94fd1026ec6b/7022367821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d142a674-afd3-4024-b87f-9cfac03305c9/banemumatepala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f56a7378-25b7-486c-a15b-ac29b72f4036/72602796768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dedd43c9-7a2b-457c-8a7b-75082d76ebd8/gavikufotejonal.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/voltas_ac_remote_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/72021351199.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/3561123412.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_off00006bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDA 5276 bytes
SHA-256: b5a3f2ebb4667622fc3905bf4b778a7f29ce3c4d299999e7cd3e0526e6c8dc73
font_01_sfnt_off00007de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE5 9736 bytes
SHA-256: 5ada3c1dc02ec0bedc79dd40729cd50a7c109d6c5490269bafc988879cfc22a0

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