Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0eb9b1a24619c6b…

MALICIOUS

PDF

71.0 KB Created: 2021-02-24 18:51:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: adb2190622fa4cb2557f3849549eb591 SHA-1: 4968cc2e8bec3e93b22582c92d7bf325b2756eac SHA-256: e0eb9b1a24619c6bcfad2ceac6c5bd3608b76d1dfb7408484110fe638dc5db74
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of a 'download button' lure further supports a malicious intent to trick the user into clicking a link, likely to download a secondary payload or navigate to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=canon%20-%20vixia%20hf%20r800%20hd%20flash%20memory%20camcorder%20battery%20life PDF link annotation
    • http://bebetadiruj.mywebcommunity.org/consejo_de_participacion_social_seph.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377717/normal_600d337a4d885.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461770/normal_6003d84ce3937.pdfIn PDF document text
    • http://kasyanbeauty.com/molecular_biology_of_the_gene_worksheet_answer_keyal4qg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375708/normal_5fe32ff8da642.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372360/normal_5ffe796c77ad2.pdfIn PDF document text
    • https://gazezujebek.weebly.com/uploads/1/3/4/8/134881616/9d9fcb41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500665/normal_603675e1ec15a.pdfIn PDF document text
    • http://tamakar.xyz/hija_de_paola_dorante7deu5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409393/normal_5ffe96c518e14.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kizarup.epizy.com/sd_formatter_cannot_format_write_protected_card.pdfIn PDF document text
    • http://tosodesuvivat.epizy.com/43554196818.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_off0000d823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD823 5904 bytes
SHA-256: 153bb831aeeb2d0fa1b6f707ff30838e131cf3b978837afc5b9a99434874439e
font_01_sfnt_off0000ec23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC23 10200 bytes
SHA-256: c5ab6bda2709b7e1d8ed6dff104991b40bbf13f8e3727b2761c9f1d01a313e49

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