Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b6181d7466e42ea…

MALICIOUS

PDF

72.0 KB Created: 2021-03-06 07:07:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 076ccf8f355777a7b55a33f64f7599a2 SHA-1: 4f385a5016ff19cbddd9c3fc725d39c6b1162dfb SHA-256: 5b6181d7466e42eab65b72a974ec3bdd8fe2d51604ea2f80720eec31f57fd632
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/award?keyword=how+to+disassemble+logitech+speakers+z120 PDF link annotation
    • https://cdn.sqhk.co/ruxuzobisu/hbpYAia/40082254420.pdfIn PDF document text
    • https://zizeximafebofiz.weebly.com/uploads/1/3/4/3/134369397/3aaf2d1b.pdfIn PDF document text
    • https://nugukijozagesek.weebly.com/uploads/1/3/0/7/130739433/2364936.pdfIn PDF document text
    • https://nagiliju.weebly.com/uploads/1/3/1/4/131412426/077c8d.pdfIn PDF document text
    • https://bitusuverutito.weebly.com/uploads/1/3/1/8/131871453/b4bb38d.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/migux.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/hjhaUie/clue_hunter_juego_gratis_online.pdfIn PDF document text
    • https://dufibivi.weebly.com/uploads/1/3/5/3/135346242/09a5f8.pdfIn PDF document text
    • https://fumamefix.weebly.com/uploads/1/3/0/8/130873833/fimuw_narilibu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://26bfc7ce-baa4-43a1-9280-72312523cbd3.filesusr.com/ugd/5af86b_25d7c04b4bcc4da59a8afeb346ab4f01.pdf?index=trueIn PDF document text
    • https://5efcf519-4c71-4be9-a00f-e1d47ba804c5.filesusr.com/ugd/ebcc4b_eeb0f6d8fd994223a82a52e265cf7328.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3227347b-37bf-4ae2-83a6-54369d3d1c6e/uppababy_vista_v2_2020_stroller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf8c8bb6-c7d9-4c71-8ba6-9aef2547794a/top_international_law_firms_nyc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52962e5b-b44b-4763-ae54-0a8c5aeade69/how_do_you_start_an_informative_essay.pdfIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_ae3d3e48615f44aa94fad84a90ebeb41.pdf?index=trueIn PDF document text
    • https://da89e6ec-52f9-4c28-8de8-447a2e923c0c.filesusr.com/ugd/5e5b2a_a0a2db2348e4433591ea530ff994d499.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c654c3bb-b1b4-47b2-92a5-1e17efbedea0/bose_wave_cd_wont_play.pdfIn PDF document text
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_fcea2e31d0bb4caca50d062f46dfbc1a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae9dbb0b-660b-40eb-8f12-15aaaafc13b7/rosemizomotikemulo.pdfIn PDF document text
    • https://e06e8306-d71e-4c92-aa1b-e8c52eeb44cb.filesusr.com/ugd/bc4951_d74d1b1aefb94669be667d4feff3757a.pdf?index=trueIn PDF document text
    • https://58f604bd-1fd8-4cfe-af9b-f15e67d030d5.filesusr.com/ugd/9a7439_c81e22428ce347368dd28a73e3bfc130.pdf?index=trueIn 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_off0000dba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA7 6120 bytes
SHA-256: fc87a0ff3fbccb5ddc07df8221e149d9ccf60b8cce7a8f4053631e6150d64be8
font_01_sfnt_off0000f068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF068 9892 bytes
SHA-256: 07ab70688ba246ceb66e321345984af6c56ae57bb8a062dec413ad93759af1ab

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