Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadb21b7fc8cb75d…

MALICIOUS

PDF

65.4 KB Created: 2021-03-01 10:42:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6ff827498787a3f36213f15f574f0a6c SHA-1: cdaee5fadc47b41429c01fa8df998804c87d7ae6 SHA-256: eadb21b7fc8cb75d60c5dee47a3b78b22108831f2c1ba5b31ce4c5877778a8af
156 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely to trick users into visiting a malicious site. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting a phishing or SEO poisoning campaign. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://crophysi.ru/wix?keyword=level+g+unit+9+answers PDF link annotation
    • https://tilakajunobeka.weebly.com/uploads/1/3/0/7/130739719/39a166a09d0.pdfIn PDF document text
    • https://xadigepuve.weebly.com/uploads/1/3/1/4/131454317/vesuwiro-luxutaperuwiv-nirageno-koxibufudepisa.pdfIn PDF document text
    • https://saboruxeketeg.weebly.com/uploads/1/3/4/8/134850947/mizopuful.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/jjhaggP/91818606611.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/woxorojero/types_of_teaching_approaches.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/colonization_for_windows_game.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/pakistan_renunciation_form.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/kokebotobix.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/dibedarakadeborofezan.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/wupakutapirijilezaj.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/aston_university_6th_form.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/menakonimisusaxiloweriwu.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/dewuror.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_off0000c5b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B1 5104 bytes
SHA-256: ae8f0ad320ef8dae072563e48dd2851123e295868706df23aead9f6b588b04d2
font_01_sfnt_off0000d736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD736 9852 bytes
SHA-256: 89b251be714aff4edceb67057e94d4fbfc58d427f7cfa8c0b03cffb73019aa28

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