Malicious PDF — malware analysis report

Static analysis result for SHA-256 6280e29dfd525834…

MALICIOUS

PDF

61.5 KB Created: 2020-11-11 01:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bb105f97dc93d147650a377f8856b86d SHA-1: db0e8b1530ef138885b0d4546ee4a8d43abfd381 SHA-256: 6280e29dfd52583464d167235d334d7f224eba6c907b60f521c6c5a3ff9b2ee2
164 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm designed to direct users to other sites. The presence of a 'Download button' heuristic further suggests a lure. ClamAV detection and ML classification confirm its malicious nature, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafftec.ru/aws?keyword=fire+and+ice+movie+kadeem PDF link annotation
    • https://nifubadipapa.weebly.com/uploads/1/3/4/3/134388301/silusedebi-gazepunijin-xudenoje-benemijalupebuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/25ec4327-9ceb-4491-a570-73bef2e23773/40801938437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f49bdec1-e1bb-410c-a576-e63c143b7d85/fortnite_scrim_discord_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/bopukezalivinorilumufu.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/ruwadeliwe.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/kakepoj.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/shark_tank_keto_pills_price.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/63113241234.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4ed722a-f61a-4c8a-a455-958f2c8df5bb/horoscopes_4_u_weekly.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_off0000b506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB506 4952 bytes
SHA-256: 03c217c28937d8916b74c4a659efbac3cffe1e2a651729f57582f6dfec7b9713
font_01_sfnt_off0000c5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D6 10512 bytes
SHA-256: fbe99abc3ae60feb14f69e7d2bc014ae5567d3ac47b9d9df18058179a274e205