Malicious PDF — malware analysis report

Static analysis result for SHA-256 f521deaeed0d602b…

MALICIOUS

PDF

82.3 KB Created: 2020-11-29 13:04:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 59e3fd4093e6c5a22c039940769a510b SHA-1: e6310974c9ad48df8e558f6f0bbedde81b14c5c1 SHA-256: f521deaeed0d602b332dcab1c5015bc9c8e230a08980216b0edef6211b2aad64
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to a school bell schedule. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://ggtraff.ru/strik?utm_term=george+washington+high+school+guam+bell+schedule In PDF document text
    • https://cdn-cms.f-static.net/uploads/4481155/normal_5faa1a8e18369.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477620/normal_5fbec0fb3453b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485435/normal_5fb8a9ca72437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449629/normal_5fa5d9ac61dbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459645/normal_5fab14344f0ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f87385b512c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461216/normal_5fa7fcc1114ef.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/susopuzupure/38635641313.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/chesterton_orthodoxy_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9706b6ab-a7c5-48e6-a21e-cc1f84f88e87/netopiwez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e37a2eaa-5b51-4cce-85de-c95476507a08/8818955603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba3036d-7542-41b6-b15d-0987996041af/xowibogajofidetezafib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ae817cc-717f-43e8-91d2-40abdfc781da/price_pfister_shower_cartridge_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/tudemibonolilazom.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/71973067916.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_off00010399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10399 5616 bytes
SHA-256: d86f9e9bf5ee754df6c4b080d08d87230f41e15c7c2193b1d57b4b98e2a165ff
font_01_sfnt_off00011690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11690 11032 bytes
SHA-256: 311cb647e25129e7fbaebf937cee9f6bf1c1c4e4eafaf4cfed0067ad3d0435ec

Open this report in the interactive analyzer, or submit your own file for analysis.