Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c8145514e9073ca…

MALICIOUS

PDF

71.7 KB Created: 2021-02-23 13:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 73618a0c21c12d71b230da0a42f6d798 SHA-1: 4b1bf94f78b2aaad64b9539d0a32e3e6217e5213 SHA-256: 0c8145514e9073caa850265b7ddde65ddfb21cf3c5342798474e45bd2e6a18a0
136 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/strik?utm_term=what+do+victoria%2527s+secret+pink+employees+wear PDF link annotation
    • http://pepirizibizedel.22web.org/agneepath_poem_songs_pk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490265/normal_600810d3d2b06.pdfIn PDF document text
    • http://dreamingdeveloper.com/poultry_diseases_diagnosis_and_treatment9kgdf.pdfIn PDF document text
    • http://mrt-zdes.ru/86525664631nlp9.pdfIn PDF document text
    • https://ligiponofejejo.weebly.com/uploads/1/3/4/3/134346234/afc82182.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450509/normal_5fe23ab5ab469.pdfIn PDF document text
    • http://copyrighthelpptteam.com/lexirrwysp.pdfIn PDF document text
    • https://kotasixunepa.weebly.com/uploads/1/3/0/7/130776076/pepejidufe_gagavesikopit_bozonevoxisar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473926/normal_602b56f6e960b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448339/normal_601f6ffa005d1.pdfIn PDF document text
    • https://kinajerabisar.weebly.com/uploads/1/3/4/7/134748515/todibuzu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366000/normal_5ffb5d17bcdbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475988/normal_5ffabe821fcf0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479222/normal_5ffc392c83a94.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/fukezavazuj/50994152911.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/gainesville_police_department_crime_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/leckie_leckie_advanced_higher_maths_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/14212576851.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_off0000da36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA36 5680 bytes
SHA-256: 293652cab19c111abc61a89a7bf30786256acf9cad7976b85d6b63ad4358ba58
font_01_sfnt_off0000ed83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED83 10536 bytes
SHA-256: 33e457a76a87105c6aa28033ed463c7ee01d19829dff607c30fac0050881a2b3