Malicious PDF — malware analysis report

Static analysis result for SHA-256 c70159f5c975be63…

MALICIOUS

PDF

77.5 KB Created: 2021-03-03 11:34:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 873dcaf74bfeb63dd70b69406c9c82f7 SHA-1: 670b46ae9564be295e156af02b4b89eaeff8a9f3 SHA-256: c70159f5c975be63d630dcf16f3e7449da012c4514685b37232c8c35f88f4091
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. ClamAV detection and ML classification strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/strik?utm_term=city+of+heavenly+fire+ending+clary+and+jace PDF link annotation
    • https://cdn.sqhk.co/sofetarunox/SkqhcWz/xibila.pdfIn PDF document text
    • https://gatelixepa.weebly.com/uploads/1/3/1/1/131163507/nekus_netutamuporuba_balavukefixix_texosekeko.pdfIn PDF document text
    • http://gabubixaj.22web.org/92371647535.pdfIn PDF document text
    • https://fikakexuk.weebly.com/uploads/1/3/0/7/130775276/72e69999fc4bd50.pdfIn PDF document text
    • http://neo-tp.ru/acer_chromebook_15_intel_celeronq2rpy.pdfIn PDF document text
    • https://cdn.sqhk.co/rasufizo/fjejjgd/28909320314.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/qicDbhi/etisalat_business_center_dubai_timings.pdfIn PDF document text
    • http://dapunajav.22web.org/avery_label_template_18160.pdfIn PDF document text
    • https://nimugafibe.weebly.com/uploads/1/3/6/0/136084612/zazemumuwivuk.pdfIn PDF document text
    • http://wevesapawuzu.22web.org/27744668884.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sasofinifujilo.epizy.com/monohybrid_and_dihybrid_crosses_worksheet_answer_key.pdfIn PDF document text
    • http://gofapebilim.rf.gd/74554436999.pdfIn PDF document text
    • http://mutupoda.rf.gd/nisajivavikimifeselox.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A8 5152 bytes
SHA-256: 8281504d01a44fc74f0430a065cb6a21949aab27d4e6c015d9fef118295400fc
font_01_sfnt_off0000f63e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63E 10712 bytes
SHA-256: c196cb1e9cbf0d4500871d03c91b4c4fce733f5c873991a9294e2b5982fa30b7
font_02_sfnt_off00011aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AEB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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