Malicious PDF — malware analysis report

Static analysis result for SHA-256 1333d5e639070433…

MALICIOUS

PDF

85.9 KB Created: 2021-04-21 16:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b916e2dc8090c55207c69b9b40bafb73 SHA-1: 56cece700447916aec6d3a389d2494e6f9900e69 SHA-256: 1333d5e6390704331a252ad03ce224b7f0b2b498437e397a82d662fbcf7a1f82
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/strik?utm_term=evenflo+tribute+convertible+car+seat+installation PDF link annotation
    • https://wejitikokajed.weebly.com/uploads/1/3/4/6/134655746/jejogevowajoxa-rodenuperisaz-sarubozegamajof-fopen.pdfIn PDF document text
    • https://monotuwisax.weebly.com/uploads/1/3/4/5/134589760/be04bdb7.pdfIn PDF document text
    • https://lofefogurabu.weebly.com/uploads/1/3/1/1/131164054/xipida.pdfIn PDF document text
    • http://mawolezodotuxu.iblogger.org/92406228302.pdfIn PDF document text
    • http://apeech.ru/tutorial_imovie_09_italiano8q190.pdfIn PDF document text
    • http://segway-wheelchair.ru/abc_tracing_sheets_for_preschoolers0psyz.pdfIn PDF document text
    • http://br1.red/xupuwefujil1mix8.pdfIn PDF document text
    • https://gunomelovolif.weebly.com/uploads/1/3/4/7/134735852/titemidije-wuzopanarifiwom-ramoro-silile.pdfIn PDF document text
    • https://zoxofaduw.weebly.com/uploads/1/3/2/6/132683138/6850403.pdfIn PDF document text
    • https://bisowepot.weebly.com/uploads/1/3/4/5/134598436/dapoluropunuxetof.pdfIn PDF document text
    • http://winclean-shop.space/35909628488e1js2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/falevi/lined_notebook_paper_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/61143644030.pdfIn PDF document text
    • http://kofujuluzode.epizy.com/42508956598.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/basin_street_blues.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/23162340893.pdfIn PDF document text
    • http://dawutanarav.epizy.com/ibps_guide_lic_aao_capsule.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/80534877287.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/nutidobunexeli.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/84699548622.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/azure_ad_connect_latest_version.pdfIn PDF document text
    • http://rakimeramut.epizy.com/jufegerin.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_off0001120c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1120C 5032 bytes
SHA-256: e6eddd11c5b9d0ae09e35834ced5161cf77597c1c51128e37e8c581926b200aa
font_01_sfnt_off00012344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12344 11340 bytes
SHA-256: 8902c8774dc7c08b16d360509904867d854a0d2f8695ab991482edc6310b7797

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