Malicious PDF — malware analysis report

Static analysis result for SHA-256 4994c9a43ef9269d…

MALICIOUS

PDF

73.5 KB Created: 2021-01-02 12:06:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9ba212d3eb8da2983fe9eaafaa2a392a SHA-1: 9cd73ce6f806fa40ea58bd5306f1adf5e96a56c7 SHA-256: 4994c9a43ef9269d6347fb3c20755af47281df1b860c240c6a172c64969e4322
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The 'utm_term' parameter in one of the URLs indicates a lure related to the 'Beyblade burst god game for pc'. The ML classifier and ClamAV detection strongly indicate maliciousness, likely for distributing further malware or phishing for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://trafftec.ru/aws?utm_term=beyblade+burst+god+game++for+pc PDF link annotation
    • https://baxakazakibabim.weebly.com/uploads/1/3/4/5/134585713/2872304.pdfIn PDF document text
    • https://rixemeja.weebly.com/uploads/1/3/4/7/134711448/cb5948c.pdfIn PDF document text
    • https://gewupokisata.weebly.com/uploads/1/3/4/6/134606569/mirapegawakum-nevanem-guwopogitura.pdfIn PDF document text
    • https://gixefizavemo.weebly.com/uploads/1/3/4/1/134108956/7619401.pdfIn PDF document text
    • https://vujipobunovopo.weebly.com/uploads/1/3/5/3/135324227/1065902.pdfIn PDF document text
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/pisenebitapiso.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/803ec1ea-436a-42d4-bf0f-9a7a0c4013cd/metodos_tecnicas_e_instrumentos_de_evaluacion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b3f5b7b-c54d-4037-afbf-a91ea5e24575/carolina_lyrics_country.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af17d9d2-add2-4bfc-a120-8fe0e728becd/amc_marina_pacifica_12_avengers_endgame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c116f72-8223-4c5f-ab66-f9f321da0fb6/sin_caballo_y_en_montiel_letra_y_aco.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6324d47c-d766-4d59-bff4-bc65368bd17c/how_to_download_sky_factory_4_for_cr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae89908-c7d6-4e30-b8db-2e52d312164b/wolakilumipepuvowigin.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/restaurar_backup_whatsapp_do_iphone_no_android.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_off0000e075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE075 5768 bytes
SHA-256: 0c91ffe196c4d064f18d4fee14b3e03563d9eb7f7e0e06b722954eef0fa4f03b
font_01_sfnt_off0000f40d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40D 11032 bytes
SHA-256: 57aaf27f7f256cfea04740b3f844e91966d57686f38793384a961dbf7eec3503

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