Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a7446662a79cd6…

MALICIOUS

PDF

78.4 KB Created: 2021-03-23 20:04:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 7584502c34a81f3a45993310f188e47e SHA-1: cc46e19a86f6128e363bde91ae1fbb8fff9f2400 SHA-256: f3a7446662a79cd622b22fff3edf5a3ae82d85180a41f5ebc0e42a8adf5cec7e
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable domains and are likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=how+to+use+a+bottle+jack PDF link annotation
    • https://cdn.sqhk.co/sekigizakeku/Ziilplw/82240272226.pdfIn PDF document text
    • http://merutakozuxonu.22web.org/lizekagiwamuril.pdfIn PDF document text
    • http://vozuzutiwajuzip.getenjoyment.net/9534921322.pdfIn PDF document text
    • http://roflan.site/pdf_sociologie_contemporainex78kw.pdfIn PDF document text
    • https://nunajamedagafep.weebly.com/uploads/1/3/5/3/135325778/tisanakiwoxot.pdfIn PDF document text
    • https://cdn.sqhk.co/xozifejor/ihcPiez/78905031044.pdfIn PDF document text
    • https://firiwipavixura.weebly.com/uploads/1/3/1/4/131407767/150bc451dcff2f.pdfIn PDF document text
    • http://dusejetiwogodad.getenjoyment.net/neet_application_form_2020_download.pdfIn PDF document text
    • https://junimadegerozo.weebly.com/uploads/1/3/4/0/134096607/2444238.pdfIn PDF document text
    • http://sellforce.ru/aidin_salih_gerek_tp5hmg2.pdfIn PDF document text
    • https://cdn.sqhk.co/sagitusat/bf0Qihg/five_below_las_vegas_hiring.pdfIn PDF document text
    • http://powusonuruw.22web.org/78231040083.pdfIn PDF document text
    • https://bifepafu.weebly.com/uploads/1/3/5/3/135315465/vadugiselub_rekokafaxu_jofunefogur.pdfIn PDF document text
    • http://imkl-checker.com/75584126112u4j4v.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
    • https://uploads.strikinglycdn.com/files/fddc6d21-7d0d-4651-9178-849b7472c55f/what_training_is_needed_to_be_a_real_estate_agent.pdfIn PDF document text
    • http://sakogabutal.onlinewebshop.net/kikinukapiwujozivodat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ffa6022-0a9e-45b8-9181-949c4a22fcf9/stanley_450_amp_jump_starter_with_compressor_manual.pdfIn PDF document text
    • http://peforuk.rf.gd/demifuvunoreka.pdfIn PDF document text
    • http://gapisamiwabu.epizy.com/10247702621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e216fd93-3990-44d6-8147-85f43159e51e/how_to_write_an_essay_outline_apa_format.pdfIn PDF document text
    • http://femulupir.rf.gd/pafiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a06abbdf-92b0-4a9a-82ec-c6b9d05d93b3/how_to_recycle_shredded_documents.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_off0000ea4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4C 4756 bytes
SHA-256: 074c13e4d1c8c1183d67cf422162b186b3b3fde100e58a1a054e55541759b7d8
font_01_sfnt_off0000faa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA3 10552 bytes
SHA-256: fec4ac820d3831cbdb8567de0a3e0e5950d4869ccd5499980106fb2faf576bc2
font_02_sfnt_off00011e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E57 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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