Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39020e3b482e254…

MALICIOUS

PDF

44.2 KB Created: 2020-10-27 18:24:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c1bbd5deb8fd5bdfe515a00f643be7e4 SHA-1: c73e982bfddba5750ee42e6ee3b76ef843b3e42a SHA-256: c39020e3b482e25457dfdaa06649da8814818218f406d526eb79d5b713e09d35
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://ttraff.link/123?keyword=fured+kiuno+of+the+bear+hunt In PDF document text
    • https://jivetigaforivuj.weebly.com/uploads/1/3/4/3/134350389/6474655.pdfIn PDF document text
    • https://wojawafelufofux.weebly.com/uploads/1/3/0/8/130813934/4661938.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/9276785.pdfIn PDF document text
    • https://fulojozizarotuv.weebly.com/uploads/1/3/4/3/134318677/4638462.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3808383.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/b8df2702d53160b.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/9882322.pdfIn PDF document text
    • https://korebamo.weebly.com/uploads/1/3/0/7/130739662/pewewolabe.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/nixobisad-denurasuke-sadomos-jixovireziwevak.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/1199778.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/wezegesosa-jigigazukazuro.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/7061675.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/muzumopujubiwod_kemolalavobe_daxudi_rutexigejor.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e49.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e49.bin)
    • https://s3.amazonaws.com/sugaguxagu/kifuripotejarube.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/xadipetinadulonutedanura.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/california_dmv_bill_of_sale_form.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/dynamics_of_machinery_haideri.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/yield_management_books.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/probability_and_statistics_2_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/arthrocare_coblator_ii_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1238/0612/files/user_interface_screen_elements_in_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/8338/2183/files/bebanago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4078/3008/files/mizubezusunadujepizekuwap.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 extracted file (font_00_sfnt_off00006e49.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E49 4944 bytes
SHA-256: ae7d633e1921a99d5a9b51a45c82b5a0c2c87a0bcb5250eb686f7fca1acf5802
font_01_sfnt_off00007f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0F 10500 bytes
SHA-256: 1b8ba8f9583ddffe34cecbe845983d5bbf71112ed1b8448dd99e1821413598d9