Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d1591d1d6d678b…

MALICIOUS

PDF

72.9 KB Created: 2021-01-27 23:22:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a681dd5319416aeb9294d468b92d1822 SHA-1: ee9c9d9ca5f766231cdaa83b63b951df80d681af SHA-256: 32d1591d1d6d678bf1a7ac722e6109cdafc5265bf1f37768cc96ca3096327669
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a second-stage payload or phish credentials. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

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://druttle.ru/123?utm_term=wilson+area+school+district+jobs PDF link annotation
    • https://cdn.sqhk.co/vipujitebiki/Kcjgcia/genufopufubizutigidexowi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451755/normal_5ffc86991ba61.pdfIn PDF document text
    • http://hookup757.fun/dotowodogoczc1d.pdfIn PDF document text
    • http://detonicinitalia.website/pexukuvesasinugapiculne.pdfIn PDF document text
    • https://fuvukajewub.weebly.com/uploads/1/3/3/9/133999399/53b1306673.pdfIn PDF document text
    • http://shoop-fn.ru/descargar_spotify_beta_premium_apkyb3ts.pdfIn PDF document text
    • https://limotesatax.weebly.com/uploads/1/3/1/8/131871768/gaxulokimatupotarega.pdfIn PDF document text
    • https://cdn.sqhk.co/rukugewul/vgj5tie/37793667621.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/iiicZji/ladybug_fashion_dress_up.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/w3hhbjf/screen_recorder_for_pc_free_download_full_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474462/normal_5fcf09b7ea673.pdfIn PDF document text
    • https://pipabujul.weebly.com/uploads/1/3/2/6/132680817/belemikepu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459177/normal_600ffda59c2e8.pdfIn PDF document text
    • http://copyright-help-center.com/92113054857hrwlu.pdfIn PDF document text
    • https://buresususotolo.weebly.com/uploads/1/3/2/7/132710635/7c537a23dcc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450355/normal_5ff2d26b1c595.pdfIn PDF document text
    • http://teenagetutor.net/amazing_world_of_gumball_penny_breaks_shell_episodemq9j7.pdfIn PDF document text
    • http://espaceabonnes.com/lajob4ncos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rodobokojezaga.epizy.com/7201385556.pdfIn PDF document text
    • http://jusowegakero.epizy.com/kuxamowomujabetufitafub.pdfIn PDF document text
    • http://wifudozakiteg.epizy.com/94519108662.pdfIn PDF document text
    • http://lafeseg.rf.gd/dynamic_website_templates_in_html_free.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_off0000e08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08C 5256 bytes
SHA-256: 6711c9fe531fcbb0354c6d64096bad1e62cfd116e9ebde9fa0df47d9e36783ac
font_01_sfnt_off0000f26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26F 10524 bytes
SHA-256: 80b5b8cac97f675471767ab595fae70579cb25917aa45dc3a85c2e54434852ce

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