Malicious PDF — malware analysis report

Static analysis result for SHA-256 be47747ac56a258b…

MALICIOUS

PDF

42.3 KB Created: 2020-11-08 03:44:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: ed619911f87bcba02502281f6530ad9e SHA-1: b80f2cb791081663f6b3575c95b9238ae3e6b34d SHA-256: be47747ac56a258b904638a01dc122f7e708d08085b6c08239d36b8cb0a7d00c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffset.ru/123?keyword=nomination+form+for+employee+of+the+month PDF link annotation
    • https://gifalixes.weebly.com/uploads/1/3/4/5/134593917/6923748.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/kazopasaw-nuzod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414498/normal_5fa6a4a56f616.pdfIn PDF document text
    • https://kozulewikije.weebly.com/uploads/1/3/4/6/134682997/nuwamavagukaded.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420020/normal_5f978c4378557.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/198d0c7da5.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/tojukomogat.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://refusoz.files.wordpress.com/2020/11/481696712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b7241be-c752-4a38-809f-6487bbb35648/25822220057.pdfIn PDF document text
    • https://migerubeluko.files.wordpress.com/2020/11/adobe_audition_1.5_download_free_crack.pdfIn PDF document text
    • https://tusaguvi.files.wordpress.com/2020/11/not_defteri_rap.pdfIn PDF document text
    • https://mutozofe.files.wordpress.com/2020/11/67728004733.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_off00006810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6810 5036 bytes
SHA-256: 8840321e8f13d69d7b02f8a1bec3d87eabab0937672dd982587fa4747a0fbccd
font_01_sfnt_off00007911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7911 10212 bytes
SHA-256: 1e8d8a9ea951daa535e738255568f873e24ece6e19bf34e6efbb225b091281d5

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