Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ef0661a4b3e8b5…

MALICIOUS

PDF

76.4 KB Created: 2021-03-19 03:21:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 035aee01f378706be8e4cb2498a1a480 SHA-1: d57bf75698234870d237540edff70e2a1b017af9 SHA-256: 04ef0661a4b3e8b5ea8851e008ab51ce479ea37c4204e1e91a76b66ab91e7457
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to suspicious domains and one identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/strik?utm_term=www.gohealth.com+admin+america PDF link annotation
    • http://madoxorijegobe.sportsontheweb.net/alimentacion_saludable_en_la_adolescencia.pdfIn PDF document text
    • http://raxaterov.iblogger.org/4284357338.pdfIn PDF document text
    • https://zexirajeroluwub.weebly.com/uploads/1/3/4/8/134848753/1641005.pdfIn PDF document text
    • https://paratokoke.weebly.com/uploads/1/3/0/7/130739311/b45e4f33992.pdfIn PDF document text
    • https://sozizupisez.weebly.com/uploads/1/3/1/8/131872239/pepebuvasuzowu.pdfIn PDF document text
    • https://nuridofif.weebly.com/uploads/1/3/4/2/134234753/vuvogekuvuruje.pdfIn PDF document text
    • http://zobowodinoto.iblogger.org/pexawopoxizolexegejom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jalasofumikom.rf.gd/is_beautiful_boy_appropriate_for_13_year_olds.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/tevisukovitanajakete.pdfIn PDF document text
    • http://gegepazanonera.rf.gd/67395825053.pdfIn PDF document text
    • http://faloboxodutak.epizy.com/woradimekajetebugumorem.pdfIn PDF document text
    • http://bokepomi.onlinewebshop.net/30609056680.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/grace_guide_vainglory.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/kirojobomevu.pdfIn PDF document text
    • http://betugoxutufaf.epizy.com/what_is_the_most_viewed_christian_song_on_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/nikiwogova.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/avatar_maker_witches_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/le_bourgeois_gentilhomme.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC00 5312 bytes
SHA-256: 319ca38889dacfb6babe7bd0d3c85f8ddcae7d7701e55aaa116a2aa04314013f
font_01_sfnt_off0000fe00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE00 10976 bytes
SHA-256: 56da891bde9c5f4567e2c5824eb4048db4c77c1ff0d98f9fcd151c63bef16ba9

Open this report in the interactive analyzer, or submit your own file for analysis.