Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c7a02c88dd6a47…

MALICIOUS

PDF

43.8 KB Created: 2020-10-26 14:05:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 3ae7ef8809a0c5ae7e1af4cf36d42b64 SHA-1: 569bb134f2557a22d62173992987622c593c4f93 SHA-256: e6c7a02c88dd6a47eda0c330709b72c65013ed9b8dcf1dad41f3c127eb5b9412
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/pify?keyword=gesture+swipe+keyboard+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412195/normal_5f955b17ce24f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377647/normal_5f8bd8994e979.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_5f8fc643a598e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_5f957441a9330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f90d1f0ef29d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383806/normal_5f964d972badb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f942d66295c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368489/normal_5f8a67fea03ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f94165870fe8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_5f89351c9feda.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/cff3d6.pdfIn PDF document text
    • https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/5079628.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/5633965.pdfIn PDF document text
    • https://sawalodisixujig.weebly.com/uploads/1/3/4/4/134490012/vewewiwapasewivaw.pdfIn PDF document text
    • https://xulajaxosu.weebly.com/uploads/1/3/4/3/134366267/3764741.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/bernhardt_hamlet_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9b29ebb-c25d-458a-add3-3df3726137d8/takejug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/805053d2-b91f-41a4-be20-8f83a57b80d6/jozuwojegazupitibidim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3186c3-be37-4e3a-b6fd-47eca5647041/mojujuzefebilevibolupeva.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_off00006cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAD 5348 bytes
SHA-256: 54db6e9251656ed671fef83b2c6048fb0e0749aed06c62f0610dd3852242be04
font_01_sfnt_off00007eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFF 10252 bytes
SHA-256: f8c7801fbc2948e86a203ab7ca279e3c0069b82f14bf5c161e11b7127696879b

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