Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fcede1339bfeaf0…

MALICIOUS

PDF

70.2 KB Created: 2021-01-24 23:05:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2074bef7d04d9c2086dfeaf12f5b7182 SHA-1: ae43acc4a3a8d922432c791a451e8928cd27e80c SHA-256: 6fcede1339bfeaf0afd1fde17f4af22fadd83d5697481e29627be6f248265b20
126 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, indicating a phishing or malware distribution attempt. The document body and embedded URLs suggest a lure related to a menu, directing users to multiple external websites, some of which are hosted on disposable domains. The presence of embedded URLs and the nature of the heuristics strongly suggest an attempt to redirect users to malicious content, likely involving JavaScript execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wb?keyword=hachi%20hachi%20riverside%20menu PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380699/normal_5fc9948bb3f92.pdfIn PDF document text
    • https://cdn.sqhk.co/semiwewedazi/hhjhOFk/banana_runtz_seeds_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/Fjj6KoA/74020215937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482218/normal_5fe05ae6b6a24.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/riahgSU/37469105892.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/eHAice4/airbnb_coupon_code_2020_october.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382190/normal_600c917fdb636.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418570/normal_5fc7ab67a4250.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420743/normal_5fdd6580071a2.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/agejw58/88739230738.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/eVheAkm/tafexusami.pdfIn PDF document text
    • http://fuwenosod.iblogger.org/ritiviwogumewag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5ffc698f31030.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xegukamadoso.epizy.com/gilmourish_big_muff_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/forensic_audit_report_kpmg.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/common_general_knowledge_questions_and_answers_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/maths_book_for_class_10.pdfIn PDF document text
    • http://nupakavidowux.epizy.com/jio_play_store_whatsapp_app.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/medieval_2_total_war_byzantine_guide.pdfIn PDF document text
    • http://sekudevabadim.rf.gd/cytotherapy_journal_author_guidelines.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_off0000d74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74C 5168 bytes
SHA-256: ca0564e669627d325c46b426711a2ade0bc79fc4c1f9fa2ba0f13cb42ba01198
font_01_sfnt_off0000e8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B6 10344 bytes
SHA-256: f3c29f4db496d70012aced2dc9692d26b7e897df143cafe14f324946c896e9c2

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