Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b12801ad1c5c6e3…

MALICIOUS

PDF

73.2 KB Created: 2021-02-27 01:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 042f8965d162a13443735249a43bfa0c SHA-1: c3fc3725633e0f585123c6160411267a24018d55 SHA-256: 6b12801ad1c5c6e3ba86e63fe02e689d98d760ec49c886ccb70705f3684377a3
96 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that mimics a search result for an 'English dictionary app without internet', likely intended to trick users into visiting a malicious site. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/wb?keyword=english%20dictionary%20app%20without%20internet PDF link annotation
    • http://graatorama.space/lenovo_ideapad_3_14_inch_4gb_ramd5ncm.pdfIn PDF document text
    • https://cdn.sqhk.co/kapapomabu/hb5c4jO/splashlearn_logo_transparent.pdfIn PDF document text
    • http://6gusevshop.website/doluvepifbnk7c.pdfIn PDF document text
    • http://kaxavetaxudu.mywebcommunity.org/27752645453.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385206/normal_5fdb2f8e23777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_6027757e45053.pdfIn PDF document text
    • http://winoraama.space/72795371265u34ad.pdfIn PDF document text
    • http://prizinsta24.space/64523190408xtdig.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/baxunaf/27475938329.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/bernette_sew_go_5_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/44065167431.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/hotel_barter_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/what_kills_stinky_feet.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/dauphin_island_surf_fishing_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/22760636349.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_off0000de1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1E 5484 bytes
SHA-256: 16adde9a55cdf8ba341e73e8d78907b5092e329a677de5b14a4f24a206a49642
font_01_sfnt_off0000f0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E1 11724 bytes
SHA-256: 57c166d87e5be814bdcd5dbe3c7acbbe006f8212cfa49e1b4e2a218125205ae1

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