Malicious PDF — malware analysis report

Static analysis result for SHA-256 3579a10234a2a5e1…

MALICIOUS

PDF

44.8 KB Created: 2020-11-07 20:02:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 04289454c8f1dd3156afde161ff4ff5b SHA-1: 1f739e80fa0eae76551b622ac5dde81c9e4de12b SHA-256: 3579a10234a2a5e17eae0735213012e423dac55c2feb9a56d56deda46abe0581
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/aws?keyword=mike+slater+voting+guide+2020 In PDF document text
    • https://bakigimos.weebly.com/uploads/1/3/4/3/134322269/3054969.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/katobe.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/tirokijifuvus-daxekarizati-sowupisujo-fixafosuw.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/juvuxisodo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dexorufokep.files.wordpress.com/2020/11/72002038413.pdfIn PDF document text
    • https://poroguneg.files.wordpress.com/2020/11/64601617868.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.pdfIn PDF document text
    • https://pixetasukero.files.wordpress.com/2020/11/62788692444.pdfIn PDF document text
    • https://gadelonu.files.wordpress.com/2020/11/sabc_2_tv_guide_tonight.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/causas_de_abdomen_agudo_quirurgico.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/jisamibefukipe.pdfIn PDF document text
    • https://sebuwisawos.files.wordpress.com/2020/11/fipupojuretis.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/o_level_maths_notes_download.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/doxixowadusexit.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_off00006d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5D 5396 bytes
SHA-256: 002a3a2de110656369dcf4057bf5a117edf7a1e60844bcea0ba8c46ab0913ac1
font_01_sfnt_off00007fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE1 11040 bytes
SHA-256: 14ba46b5030b16a6da21dbd9cc9691e253b5e075f315f3a43d356d3aec63861b

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