Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ed889320f5e8ce…

MALICIOUS

PDF

66.8 KB Created: 2020-11-30 23:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2f6ab47fa10ef0b061d9a640edab7db8 SHA-1: 1373e957d66433ab328d7dfec9c3416c8977f6d0 SHA-256: f3ed889320f5e8ce935e1e8897dd94dd1274e343ccf3eee5ee0cc071bb0fd1e3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/wb?keyword=mcsd%20web%20applications%20study%20guide PDF link annotation
    • https://nasijominazol.weebly.com/uploads/1/3/4/3/134366940/cd93b67.pdfIn PDF document text
    • https://jokonufukitis.weebly.com/uploads/1/3/4/3/134399540/ziduna.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383334/normal_5f9afc2c82940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491426/normal_5fc1a15e6c4c9.pdfIn PDF document text
    • https://xegiwisupanax.weebly.com/uploads/1/3/4/3/134367095/gosetop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413843/normal_5f9ef5ca888e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405950/normal_5f93a78fe6ead.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394077/normal_5fa5e74d137c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408593/normal_5fa9e2e7ca9f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_5f89dd7ba7ba7.pdfIn PDF document text
    • https://sizuxemonip.weebly.com/uploads/1/3/4/3/134315948/besevofo.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/noworeb-menigawujajo-xemikeja.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/dcfac06a-0926-4078-828f-6dddd6107d11/latimaxajadavezesojudib.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1b6e4397200107e34052/1606228846905/plants_of_the_gods.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_off0000c598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC598 5484 bytes
SHA-256: a0a64fb457f2d77a16232a6f6ebfc7d8f6fe6ced742b21ba94a4972a4fac5158
font_01_sfnt_off0000d874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD874 11172 bytes
SHA-256: 71e698d28dc864491275b55b22ecaa93a61e70cb1df948d40dd8c0aa377c50df