Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eaa00f47d8ba54e…

MALICIOUS

PDF

100.5 KB Created: 2021-03-14 17:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 007602bf4e227042a3deee5683201a52 SHA-1: d7ab9bc771dca510a442c8c27bbcc2e13406d6d3 SHA-256: 1eaa00f47d8ba54e4cc92fe4f0c014ea92c9ce1932f953fa9483dd162af8228d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to disposable domains and one specifically identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the sheer volume of suspicious URLs suggests a coordinated effort to redirect users to harmful content.

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://botokaw.ru/wix?keyword=cranial+nerve+assessment+worksheet PDF link annotation
    • http://50offstore.pro/conceito_de_texto_expositivo_argumentativo4mm3h.pdfIn PDF document text
    • http://tazanup.mypressonline.com/planos_arquitectonicos_de_departamentos.pdfIn PDF document text
    • https://luzejezoroze.weebly.com/uploads/1/3/4/3/134361740/febagi.pdfIn PDF document text
    • https://jorobeperepi.weebly.com/uploads/1/3/1/8/131856290/369a60.pdfIn PDF document text
    • http://rokonedewok.22web.org/volipudena.pdfIn PDF document text
    • http://nitapida.mywebcommunity.org/25431309708.pdfIn PDF document text
    • http://setofexperience.site/card_visit_ai_freezi0zm.pdfIn PDF document text
    • http://linza.media/nirisasikajivopuc4tv4.pdfIn PDF document text
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/libemuxufunewer-fekativonomunot.pdfIn PDF document text
    • https://pekosorevonoxa.weebly.com/uploads/1/3/0/7/130739373/79b68c.pdfIn PDF document text
    • http://zapitexidij.mypressonline.com/59509680964.pdfIn PDF document text
    • http://jumovuv.22web.org/ameristar_warranty_information.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/leributafa/60719274138.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/vadafuferufabizil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d97fabf9-0bbf-4b05-9dc0-c39185f47fa1/52700392379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce0321e4-0ef8-4ba9-8907-231ca7c9cf74/starting_strength_for_40_year_old.pdfIn PDF document text
    • http://wugetad.myartsonline.com/how_do_i_update_my_samsung_software_on_my_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/kugarovejadidojilemutof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/027f4af9-7f1e-4262-8038-102e97282d38/how_much_do_foster_parents_get_paid_in_wv.pdfIn PDF document text
    • http://soxarigur.myartsonline.com/liturgical_music_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a286dcf9-ec98-4920-b863-ff0459fb5e50/weber_genesis_silver_2_burner_grill_cover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/557e239d-7498-4ee3-93a8-a93710b6509e/foundations_of_psychiatric_mental_health_nursing_8th_edition_quizlet.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D0B 5048 bytes
SHA-256: f64678c67f190107f8b11d5c9ac40cf3d98d4b05b2ee4e5b82eb8d96c3032ec8
font_01_sfnt_off00015e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E1A 10916 bytes
SHA-256: e2b75d34d6f84343a339f826b195447af4688ae6ff2b7a9d232533e271e7f419

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