Malicious PDF — malware analysis report

Static analysis result for SHA-256 54546ee940c1d5b5…

MALICIOUS

PDF

72.9 KB Created: 2021-04-06 06:19:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 2c9b7ddd0afb49f96153ff4a06ddebe1 SHA-1: 5647cf6e896becb09286a90fe7dd090836f95255 SHA-256: 54546ee940c1d5b58095bf1e87a74c725437714a1692e3422829708295a1a562
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 0.9996

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://jottigo.ru/wix?keyword=millennium+falcon+light+switch+cover PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413240/normal_6037bd533dd9d.pdfIn PDF document text
    • http://kavopiluxum.iblogger.org/american_cinematographer_magazine_free_download.pdfIn PDF document text
    • http://organicsss.space/38392064314lp0a5.pdfIn PDF document text
    • http://erogan-columbia.site/infamous_first_light_ps4_trophy_guidepffh2.pdfIn PDF document text
    • http://setofexperience.site/propagation_of_ornamental_plantsghqba.pdfIn PDF document text
    • http://homearfes.com/nunajiligifuul2n7.pdfIn PDF document text
    • http://xolexoduvoto.iblogger.org/anestesia_geral_veterinaria.pdfIn PDF document text
    • http://drovazvenigorod.ru/how_much_is_google_it_certificationypft0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_601d92135893f.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/semuxemakaw/xobujorexewiwosodabomam.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/call_me_by_your_name_watch_online_stream.pdfIn PDF document text
    • http://retetopipazaned.epizy.com/ct_coronary_angiogram_nice_guidelines.pdfIn PDF document text
    • http://bifapekedareb.rf.gd/66036935447.pdfIn PDF document text
    • http://zibanabop.rf.gd/cancionero_cristiano_con_acordes_para_guitarra.pdfIn PDF document text
    • http://namofigironebej.epizy.com/agile_pm_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/naravowufegerozom.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/langit_abu_abu_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/bell_curve_distribution_excel_template.pdfIn PDF document text
    • http://junopufobapepax.rf.gd/wodakojik.pdfIn PDF document text
    • http://xupiwepe.epizy.com/habitos_alimenticios_tesis.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/37897916677.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_off0000dee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE1 5452 bytes
SHA-256: 525904538cb91e81d85620d1555c61fc81867ec9ea7c41693a20355caf16ccbe
font_01_sfnt_off0000f168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF168 10124 bytes
SHA-256: b60d05b18224e55fca44d50a1249a97046255953922b6a3ef02262b6293de334

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