Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f6b3b5833886918…

MALICIOUS

PDF

52.1 KB Created: 2020-11-05 05:18:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 0a9b46858c4acba7c2cdacda2df2894a SHA-1: 72a4777cd746df9a856e49093f53e6bae01d22cb SHA-256: 3f6b3b58338869181e90858c36da4812da07c7d6acd400ec1674dc8091113dc2
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.me/123?keyword=rental+properties+in+greenville+al In PDF document text
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/logunavav_beraleburovege.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372354/normal_5f8cf72b55b12.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/1799969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393624/normal_5f9daa9214e27.pdfIn PDF document text
    • https://radigaligoled.weebly.com/uploads/1/3/4/3/134333621/1816285.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/68b12eecde8.pdfIn PDF document text
    • https://xikunamoveg.weebly.com/uploads/1/3/4/5/134596382/4446610.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/masedagepi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f87207cc9039.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/588d000a5.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/7481487.pdfIn PDF document text
    • https://xijoxamapapi.weebly.com/uploads/1/3/4/3/134337958/guruvebukinaregu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bubeto/spiderman_booster_seat_uk.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_off00007f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F37 4840 bytes
SHA-256: 5a955ef02a57d14b522f682e9532137067460a767154165905d3fe0f55487d56
font_01_sfnt_off00008fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBF 11072 bytes
SHA-256: b61e535b1d3ef367a258b1c1f98b2e9e45a1f87564555a0ece7abe07340d0550
font_02_sfnt_off0000b557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB557 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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