Malicious PDF — malware analysis report

Static analysis result for SHA-256 03128027c21fdede…

MALICIOUS

PDF

87.7 KB Created: 2021-03-18 00:05:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 38b85366f4bc6049e5f12dabd75b865e SHA-1: 16708083ffa0b7b59bacceac0539c4cb574a8217 SHA-256: 03128027c21fdede77bb9b888c1d8cc36e74066a704eb6851bf638b7bb40d3e0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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://lozipotod.ru/wix?keyword=ridgeline+fish+house PDF link annotation
    • http://igclienteam.com/53652285952bt57l.pdfIn PDF document text
    • http://bachanalytics.com/dungeons_and_dragons_characters741ei.pdfIn PDF document text
    • http://termo-nord.tech/noguflb7gy.pdfIn PDF document text
    • http://pagebake.com/kumikolopuwajeshyj9.pdfIn PDF document text
    • http://theharaka.online/88386450218ip3ot.pdfIn PDF document text
    • http://uspex22.online/award_winners_ppt_template1e7rd.pdfIn PDF document text
    • http://wownatural.fun/lelawu84sgp.pdfIn PDF document text
    • http://bestunew.xyz/289081838142wqkd.pdfIn PDF document text
    • http://7gusevshop.website/las_formas_de_comunicacion_que_existencnsem.pdfIn PDF document text
    • http://gukivuzijisuva.getenjoyment.net/87785634879.pdfIn PDF document text
    • http://siteznakomstv69.space/barcode_scanner_android_device5znt2.pdfIn PDF document text
    • http://dihtyar.online/what_grade_level_are_biscuit_bookse77jm.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/wipotegadodorek/rubufejove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b31bb94-72df-4ba8-80c0-033e301e78ee/tejitiwewim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/028cbb7a-e752-4529-967f-198e85e0e96b/dunkin_donuts_cinnamon_raisin_bagel_ingredients.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33928213-4726-43d5-b6e1-3b7d0f06d502/nuevo_libro_de_los_juegos_del_hambre_precio.pdfIn PDF document text
    • http://piwakitidi.onlinewebshop.net/vibetidukonuxunaxudezu.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/centrifugal_pump_lab_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3abbc4ca-393b-45da-8522-87e1c885570f/nixamemafuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3087f383-605c-45f6-8d3c-894e96e5eb08/gerovakevavivuletirof.pdfIn PDF document text
    • http://najekaweza.onlinewebshop.net/business_process_management_2020.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_off00011968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11968 4872 bytes
SHA-256: 54dd3acae5dd03ad97cdf411fdd4e67653540f109d73a1ec6c487c1f28e49595
font_01_sfnt_off00012a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A07 11764 bytes
SHA-256: 26e0c387425fbaa595ef76e48527445a400745973ee72701d66456e16d649bc0

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