Malicious PDF — malware analysis report

Static analysis result for SHA-256 6705b9b7465050f3…

MALICIOUS

PDF

74.6 KB Created: 2021-04-05 16:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 790b0ad881aa1f297affd721331aaaa6 SHA-1: ebf88c6794f9a79cc106f571555668d120887c65 SHA-256: 6705b9b7465050f3fd3108e521b77818f2ffbc52c091b98f6021a697671abb7f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple external URIs pointing to suspicious domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of embedded URLs and the PDF structure suggest it's designed to redirect users to potentially harmful websites, likely for credential harvesting or further malware delivery.

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/award?keyword=artistry+ideal+radiance+hidratante+iluminador+pdf PDF link annotation
    • http://jobauthor.online/denon_avr_1312_manuale_italianomt4jc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471235/normal_606352210bb02.pdfIn PDF document text
    • http://cashbackk.site/3396519012aespm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428342/normal_606304c04c190.pdfIn PDF document text
    • http://naturka.space/diastolic_function_guidelines_201708e33.pdfIn PDF document text
    • http://particulieres-societegenerale.best/47045501306t7u8d.pdfIn PDF document text
    • http://nncucuucuc.space/407174568232i00y.pdfIn PDF document text
    • http://visionnew.xyz/richard_lustig_book_amazon8s5gp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458417/normal_6063ed0838dc1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393521/normal_5ff7ee8f1cace.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424011/normal_60413e096b7df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480581/normal_60388b4acca30.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/lukexorilefosekibisagolyxbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460066/normal_6063c5e648a2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497395/normal_5fcd69f808d83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422163/normal_5fce34cdd7b72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426424/normal_5fd7d22132872.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/888989fc-95f5-419f-b71c-45199e179b3c/get_workkeys_test_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83fd9e4b-e35d-4036-b834-8bf3bc6cff6d/ley_1010_de_2006_suin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ae6b2e-af5f-4f96-a375-ff88677d89ea/reditijewibuvilona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f4d3938-7b78-4410-ace5-68cb736a6837/pumebitojanavu.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 3

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_off0000e23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23B 5484 bytes
SHA-256: e128ab19610ed043fd2a401871ece2b9273ff119ab8370f000a5ce0b5ebc7ad9
font_01_sfnt_off0000f4c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C3 12460 bytes
SHA-256: f736f9c2174e97f1002af327bd3fba644c588605ad3f92d1dce493c1050edd95

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