Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f399df87aa42f6…

MALICIOUS

PDF

83.8 KB Created: 2021-03-25 17:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 319a5060899903a642d75c8ef05c3bff SHA-1: 8f2bebb3abcef1cc5f501a6182e080a098fc4ce7 SHA-256: 35f399df87aa42f6b1ba270fd073344268fa613f80ecbc2020ba74678ff2073a
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, many hosted on disposable domains or link farms, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, appears to be a lure related to a 'Dyson am05 repair manual', aiming to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=dyson+am05+repair+manual PDF link annotation
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/banugovasix-rajotinove.pdfIn PDF document text
    • https://xubidanata.weebly.com/uploads/1/3/4/8/134895671/zavutetagek.pdfIn PDF document text
    • https://woxukobu.weebly.com/uploads/1/3/4/3/134392577/7000754.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/company_safety_program.pdfIn PDF document text
    • http://guzoseta.getenjoyment.net/mikejupiwarudozedomu.pdfIn PDF document text
    • https://lexezidelaxo.weebly.com/uploads/1/3/4/6/134605078/kalokide-loxetomej.pdfIn PDF document text
    • https://kibodoru.weebly.com/uploads/1/3/2/6/132695707/587986a3f513b3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8d81200f-d1d6-4bfe-8ed6-cf88fb0e0a3f/cuanto_tiempo_dura_la_carne_descongelada_en_la_nevera.pdfIn PDF document text
    • http://midorevogexifaz.epizy.com/first_steps_in_academic_writing_free_download.pdfIn PDF document text
    • http://rodumejowi.epizy.com/definition_of_non-adaptive_behavior.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6706a97f-df1e-42a5-80b6-6e92d85c2589/11683123183.pdfIn PDF document text
    • http://melaworogafema.epizy.com/un_autre_monde_paroles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34972533-10c3-4ee1-b1ae-4d4ad95b42c6/lafuzeronexuzopegarojisuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ed9d27e-388b-4d60-9ab0-a12d62162b9b/best_self_help_books_for_mental.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5479247c-810d-4dea-a06e-0aa2324f52cc/fundamentals_of_industrial_hygiene_plog.pdfIn PDF document text
    • http://tuxefofoxomar.epizy.com/andrea_camilleri_books.pdfIn PDF document text
    • http://baritobaseben.epizy.com/biodata_format_with_photo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7E 5132 bytes
SHA-256: 72c89631b22b6ef9df5425a5546d9f6e09cd5206ccf830f8dd19f1906bad0872
font_01_sfnt_off00010bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCC 11900 bytes
SHA-256: 3f9ee5fd7fd0dab4f77df4fff16038ebde7be65b6c7646eb4204d8521bc406bd
font_02_sfnt_off00013403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13403 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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