Malicious PDF — malware analysis report

Static analysis result for SHA-256 62cfb88cca91a4f0…

MALICIOUS

PDF

74.3 KB Created: 2021-03-13 19:04:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 059b2c2d7bb7a44654228898f1d850da SHA-1: 984b754402326a600e59aaf0d0e445b40d57148b SHA-256: 62cfb88cca91a4f0d9112a45cd3a6946895bc3e01f38998e39172211f032e88e
126 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, including one that appears to be a search result lure for 'scrap metal san francisco' hosted on ponafet.ru. The PDF also functions as a link farm, directing users to various disposable domains, suggesting a broad phishing campaign. No scripts were extracted, but the presence of multiple malicious URLs points to a phishing attack designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=scrap+metal+san+francisco PDF link annotation
    • http://fortuneo.best/wakijogemakixatajoto17qsz.pdfIn PDF document text
    • http://ca-management.website/kebikemivikeviba0iqws.pdfIn PDF document text
    • http://fexevewuli.mypressonline.com/dexegubabiles.pdfIn PDF document text
    • http://mifirejetevina.getenjoyment.net/44326590254.pdfIn PDF document text
    • http://fipoziwebetaz.22web.org/kurzweil_pc88mx_for_sale.pdfIn PDF document text
    • http://carbackseat.site/paroles_noel_des_enfants_du_mondeiq866.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/jbJhdh0/learn_thai_alphabet_writing_practice.pdfIn PDF document text
    • http://runmasten.online/guguzknd2t.pdfIn PDF document text
    • http://oneitstore.info/48187466506t63x2.pdfIn PDF document text
    • http://copyrighthelpbusiness.net/2010_chrysler_town_and_country_touring_optionss9uxs.pdfIn PDF document text
    • http://lastasked.com/gexemozakow5m1wo.pdfIn PDF document text
    • http://pek-24.cc/dean_koontz_frankenstein_series_in_orderrjjtr.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/works_cited_worksheet_for_middle_school.pdfIn PDF document text
    • http://cetakchantek.com/free_massachusetts_lease_agreement_templateg4ly0.pdfIn PDF document text
    • https://cdn.sqhk.co/gelowidabik/dbnMjge/brimonidine_tartrate_generic_for_alphagan-_p.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/1ggiex6/notepad_free_download_for_windows_7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bed107af-6203-4d45-8baf-7ae096d7d4b3/98194986017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f087d5a-2717-465e-8dc2-fbc96d315f29/savage_stevens_320_security_review.pdfIn PDF document text
    • http://votitagupen.epizy.com/magnetic_field_worksheet.pdfIn PDF document text
    • http://mexowotevofo.rf.gd/98976100611.pdfIn PDF document text
    • http://zuxokoberibaw.atwebpages.com/what_is_a_civil_process.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_off0000e782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE782 5264 bytes
SHA-256: 321b4ffb77f7bde52d7a66630076229e7fd1f56c45ce7984293d2b604045f653
font_01_sfnt_off0000f957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF957 10176 bytes
SHA-256: 127e62f597b92828b10a39fc4651fb10fcdbeec4bdf9c40ae1b25b6efca0a02e

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