Malicious PDF — malware analysis report

Static analysis result for SHA-256 94734a8d77e70398…

MALICIOUS

PDF

65.5 KB Created: 2020-11-11 08:11:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 229dab083352b97f20305ae0febc6545 SHA-1: ee1102deb43bd3887d7af498346cf4c10f31fffa SHA-256: 94734a8d77e703981f4f5536ff5165c14a48a3fc8d7f50819ceb5b2a09c22504
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=how+long+is+a+catholic+wedding In PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/6848636.pdfIn PDF document text
    • https://nufivoba.weebly.com/uploads/1/3/4/0/134017608/bufetuvixidu.pdfIn PDF document text
    • https://labivuzixifazer.weebly.com/uploads/1/3/4/3/134310915/9cf109dfba311.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5fa7de8d25c83.pdfIn PDF document text
    • https://karezolakep.weebly.com/uploads/1/3/1/3/131398125/5768239.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368501/normal_5fa17b4f1b16f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391634/normal_5f9fd406bbab3.pdfIn PDF document text
    • https://sedifuwenute.weebly.com/uploads/1/3/4/4/134464273/mukeferavevazo.pdfIn PDF document text
    • https://vonojatu.weebly.com/uploads/1/3/4/7/134711894/ketapakedozasur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/903dd427-3e77-4086-9e5e-dc4b49b4641e/89379562033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/462e427b-c2a0-48f3-bdf8-dce63f1504a5/mechanicsburg_mens_club_mechanicsburg_pa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68e50978-b96b-403a-8779-9c14b54db0c5/69629627238.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_off0000c519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC519 5160 bytes
SHA-256: 148e2b96db4e0b154cb568a6b091af728d96b9c5c4ac9552fe3e5cad638e7988
font_01_sfnt_off0000d6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BA 10196 bytes
SHA-256: a981994b54e0cf11329ebf73bf6e507ab77d2831006b5e706ad35db1eb49b1b2

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