Malicious PDF — malware analysis report

Static analysis result for SHA-256 008eec6e46ad8b61…

MALICIOUS

PDF

85.6 KB Created: 2021-03-22 12:38:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 19a720ca100fd6e3358956893ca7699b SHA-1: 95dbf330d4ca0844ad41c17a1f4e2e377cbd7294 SHA-256: 008eec6e46ad8b61915c691e66570fd3be337b5f530074868be826066e009405
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/wix?keyword=hamilton+beach+searing+grill+25360+manual PDF link annotation
    • http://chambreapp.xyz/what_is_the_ugliest_animal_in_the_whole_worldgnaur.pdfIn PDF document text
    • https://cdn.sqhk.co/vejuwozigef/igOhawA/chemical_composition_of_cereal_grains.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamujigip/6ttrKgg/bot_designer_for_discord_premium_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463830/normal_60357854ef9fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496146/normal_6002d3da3ad85.pdfIn PDF document text
    • http://russianpatentexpert.com/70529713032qkyb0.pdfIn PDF document text
    • http://bnatural.space/14038621449cke2y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412158/normal_5ff539ccbe85b.pdfIn PDF document text
    • http://komarovskii.xyz/allegiant_air_book_flights_onlyh6lra.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481847/normal_5fc7257ebda72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485710/normal_6050da5b3ee67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375077/normal_601ce72d77549.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/hdiahfW/13429152329.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479236/normal_6006627962164.pdfIn PDF document text
    • http://kupivse.xyz/nuvuginipekalixokiduseuahnz.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/ajg2Kgf/woodworking_bench_tops_for_sale.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/tawovojo/6617174295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53dd47dd-272f-4e91-9d6a-0ee50fbb245a/sunedawetejexopib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03130ecc-94f6-44ee-927e-0543d2f17482/ripivejexotaferudi.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/1935086541.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/korean_letters_in_english_alphabet.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/jasper_report_php_java_bridge.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_off0000f748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF748 6032 bytes
SHA-256: 17f338770ffc04761fd34447aa70b876a0b55d7666df94a20374443be4d094de
font_01_sfnt_off00010b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9C 12304 bytes
SHA-256: 4f953370fe28b94ccc58adea64fdaf4bf0f303b80933b97067fb0cdeb4f3b966
font_02_sfnt_off0001335c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1335C 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd