Malicious PDF — malware analysis report

Static analysis result for SHA-256 460438ba41d02c1b…

MALICIOUS

PDF

51.2 KB Created: 2020-11-06 16:42:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 9bb6245f490839432582a81d9015c63d SHA-1: 59dd4d913badc3b23137eb523bca26188ffe9f0f SHA-256: 460438ba41d02c1b6964e5df5c8d699b29f97b5aad7c27770e75c8784f76a87f
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=resumen+de+el+principito+por+capitulos In PDF document text
    • https://tewodoxes.weebly.com/uploads/1/3/4/3/134368692/8302181.pdfIn PDF document text
    • https://zuvubexusemeto.weebly.com/uploads/1/3/4/3/134373725/witaximebuxosuz.pdfIn PDF document text
    • https://pirowefe.weebly.com/uploads/1/3/4/4/134444143/govesozebanelarazewu.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/7341782.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/wilidepezofajami.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/how_to_draw_for_beginners.pdfIn PDF document text
    • https://xelinatuki.files.wordpress.com/2020/11/12873235441.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/44981970389.pdfIn PDF document text
    • https://fefitaw.files.wordpress.com/2020/11/64939725781.pdfIn PDF document text
    • https://tumitom.files.wordpress.com/2020/11/fapejowavamenebosoxizane.pdfIn PDF document text
    • https://fizafadolozu.files.wordpress.com/2020/11/31713389540.pdfIn PDF document text
    • https://dexorufokep.files.wordpress.com/2020/11/19830351262.pdfIn PDF document text
    • https://wupegol.files.wordpress.com/2020/11/73039052987.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000794a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794A 2864 bytes
SHA-256: 9117bbf316fc2ea3b6e817c786b4239c6e639bc9bbc85041159577d557ec1aa5
font_01_sfnt_off0000837a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837A 5228 bytes
SHA-256: d40fc93b3ed848d1ece44d1569ee30472f014067a86e4b172ef89a90daef0f32
font_02_sfnt_off0000952b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952B 12936 bytes
SHA-256: cac43a807bf3619077cc6099092227f8f621c74c9389969660d274122aebec98