Malicious PDF — malware analysis report

Static analysis result for SHA-256 771949caddda2483…

MALICIOUS

PDF

66.6 KB Created: 2020-12-19 15:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 94bbf6dfc8b808ba0c6ce9e30cd628e1 SHA-1: 1562672f0579d4e39dd5e3eb34f10bde7c6cc774 SHA-256: 771949caddda2483208ede0bd468aa57688d5d7a5defc629415eb0d5ad70e9ef
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://traffine.ru/aws?utm_term=cause+and+effect+paragraph+exercises+with+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367912/normal_5fcf95bbc500d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404116/normal_5fb2b4da28216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_5fbf559542290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413011/normal_5fd0d5801f6dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500889/normal_5fb2b50aba984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416327/normal_5fbf07cc3c24b.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/wujodibu/ct_youth_wrestling_schedule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3f7ce25-ed2f-4318-a6fa-b4c89b6f1908/43197930682.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/how_have_you_been_funny_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/mossyrock_high_school_website.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c930595b-1601-47bc-b409-28ee2f1b5154/54067015831.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/23929868664.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/cherished_teddies_value_guide_2016.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_off0000c893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC893 5452 bytes
SHA-256: 59a84a9d10412d8d953d45f60ac74ae5ebc719b1f23600a031efc60bb211bc14
font_01_sfnt_off0000db2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2E 10044 bytes
SHA-256: 616275430082339fbe22803e281530ce950c7eb4e74e95a72cef6479329352ae