Malicious PDF — malware analysis report

Static analysis result for SHA-256 e24edd1895857c3f…

MALICIOUS

PDF

75.0 KB Created: 2021-02-24 06:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7a989859d3499b2946399a4073096859 SHA-1: dca3c1f4ca28e4b237c7bb77967cac1a99efe280 SHA-256: e24edd1895857c3f3b97e069af2b0dd1ccc1db37674806d55530784aeec4f4f9
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to PDF files hosted on various domains. This behavior is indicative of a link farm or a phishing attempt to direct users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wb?keyword=classifying%20rational%20numbers%20worksheet%207th%20grade PDF link annotation
    • https://cdn.sqhk.co/jisepozidis/PgiGYkY/cyclobenzaprine_half_life_breastfeeding.pdfIn PDF document text
    • https://cdn.sqhk.co/gaduwifawide/j4gcwl2/star_football_academy_benin_city.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/djbZUjg/xovazogiwosaxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401732/normal_602239fc7e1a3.pdfIn PDF document text
    • https://loworukad.weebly.com/uploads/1/3/5/3/135312099/59e509.pdfIn PDF document text
    • https://cdn.sqhk.co/tokokoxisuf/1icjjdZ/37450371493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461751/normal_6029fe7f00031.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/ihgdgQB/pavudasisipujenutivalib.pdfIn PDF document text
    • http://usechambre.xyz/497604537209p4ag.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/htzZjjL/descargar_mapa_legion_td_warcraft_3.pdfIn PDF document text
    • https://cdn.sqhk.co/zakolemafemo/jiwokSm/8474671874.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/FoifJc6/bisudisuroguvub.pdfIn PDF document text
    • https://cdn.sqhk.co/fajaleniwa/geX3Ehh/12450667380.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366371/normal_5fcc944187c04.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/giifhjI/50788140643.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48E 5704 bytes
SHA-256: 74266ecb9f35574f05bd7a70e6a084420a88fec1d66672e348dbd5cb4f1efe22
font_01_sfnt_off0000f7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F1 11668 bytes
SHA-256: 66cfb3542b7912ff4aa4f9504fe4dd09929b3065a64f8391878f8839d878724d

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