Malicious PDF — malware analysis report

Static analysis result for SHA-256 d672dc76a5dc0e39…

MALICIOUS

PDF

91.5 KB Created: 2021-03-27 10:27:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0c54a34e3cf560712ee7ead668d72537 SHA-1: 3b76273ec2e10890f13ac034941ffff083235a04 SHA-256: d672dc76a5dc0e395830481347cf1e8e149911090d6e84a7d218e392a3118aa8
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a domain known for hosting malicious content, as indicated by the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a phishing or social engineering attempt to drive traffic to the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=symmetric+matrix+example+pdf PDF link annotation
    • http://gagelepapu.22web.org/ripeb.pdfIn PDF document text
    • http://xevidome.iblogger.org/camera_360_lite_apk_old_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445890/normal_603ad176a6585.pdfIn PDF document text
    • http://jakufodunod.getenjoyment.net/athenaion_politeia_senofonte.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392659/normal_60084cf533c3b.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/0881a646-a932-4035-b5c1-c465b0441e8f/73126055843.pdfIn PDF document text
    • http://wivaxodi.onlinewebshop.net/lithium_ion_battery_technology.pdfIn PDF document text
    • http://gebejofokim.rf.gd/irrigation_system_of_pakistan.pdfIn PDF document text
    • https://a54de82d-0003-4787-801b-d7ee719c780a.filesusr.com/ugd/8d57bd_38ad29af81f24258b43ed49be6df03a2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f8978d-74d9-4ae0-a59b-51105d97b912/does_bullseye_trades_work.pdfIn PDF document text
    • https://c18d9829-3add-4afa-bc87-35007fe3998a.filesusr.com/ugd/70c1ec_6bf2a19a0d1b493c9b844ca58ef626fd.pdf?index=trueIn PDF document text
    • https://f85e9a30-dbb9-40fd-a66d-53bd7daafe07.filesusr.com/ugd/1b9faa_a86e497b860747d39274d5cd54654f27.pdf?index=trueIn PDF document text
    • http://velosipu.epizy.com/zoom_g11_multi-effects_processor.pdfIn PDF document text
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_9fcf6b2e332f41f98a9f63f4ecd60ef6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7ec518-1733-47b1-8e34-96d5b0e416b0/zoduxamow.pdfIn PDF document text
    • http://bezixezejagu.rf.gd/nogabopilituwelamipupew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7f2d663-a61c-42df-a6c4-d98e2df42996/thermador_service_near_me.pdfIn PDF document text
    • http://wufikemofumop.atwebpages.com/kinesiologia_que_es.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243bde22-b302-4352-b33e-5a8dd3f0dd09/rupuxapovi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB3 5396 bytes
SHA-256: ba1ac21ef954b25a057d08263ec5ef25139ed1181fcc97ab514f67b5c5df27f9
font_01_sfnt_off00011f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F09 12536 bytes
SHA-256: a849c50f7ead606321836d7484d074a68fbfeec4381512721169082d82013436
font_02_sfnt_off0001495e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1495E 16668 bytes
SHA-256: 3874ca1a03121af0a301894874a3b176ac0e219fe0020478efd52ac982b3e2c3

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