Malicious PDF — malware analysis report

Static analysis result for SHA-256 10560a183fdb52d9…

MALICIOUS

PDF

80.2 KB Created: 2021-04-06 18:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: eda22007ca2260c4f05c0884a49fbac8 SHA-1: dde7bf466c2ad3f05dddd0660e0fbbb36d1ad696 SHA-256: 10560a183fdb52d9de7cca2199807fd275140ac10ee0df1e649d969dee0bac9c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://jottigo.ru/strik?utm_term=divx+converter+serial+key PDF link annotation
    • https://rixexumig.weebly.com/uploads/1/3/2/6/132681576/lajateronemi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415951/normal_5fe87c0cd7c02.pdfIn PDF document text
    • https://rubexanow.weebly.com/uploads/1/3/5/3/135346757/vixipagunaginu.pdfIn PDF document text
    • https://lanudoda.weebly.com/uploads/1/3/2/3/132303217/jisasito_dusebamizokex_xodakalakef.pdfIn PDF document text
    • http://ruguxod.iblogger.org/sectional_aeronautical_chart_legend.pdfIn PDF document text
    • https://bivofeneduwid.weebly.com/uploads/1/3/1/1/131163561/baxopemewi-kadezupotuvo.pdfIn PDF document text
    • http://durukogemegaxib.22web.org/sogaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476750/normal_5fce38238d565.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/wupiwupiwot/resunugikarisad.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/pegebeziritomepirufatired.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf0d7f3-688e-48b0-b217-9bc075ea1c93/the_great_awakening_contribute_to_the_american_revolution_by.pdfIn PDF document text
    • http://wujenavilaga.rf.gd/tipos_de_formatos_de_archivos_de_video.pdfIn PDF document text
    • http://migisunutejelu.rf.gd/javascript_validation_tutorial_free_download.pdfIn PDF document text
    • http://legosipado.rf.gd/73860249054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/604eb200-5a04-4b0c-a9e1-431f07e4a467/sims_3_cheats_ps3_make_all_happy.pdfIn PDF document text
    • http://tepuxasimu.rf.gd/blow_moulding_design_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93ea53f9-a5d2-4c80-9a48-0bfa9052f2ec/busotivefuwega.pdfIn PDF document text
    • http://winavetipi.epizy.com/zotelafusos.pdfIn PDF document text
    • http://jepejovunera.rf.gd/94534420499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1ed173-f1c1-4f19-9efd-944fd913f1fe/lajubaxole.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 8

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_off0000f8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EF 5084 bytes
SHA-256: 81a2cb9c1cdb0b8e3ce285938fccc7cc93d06d2cf696d0bb6e9b5e80d4b25dfd
font_01_sfnt_off00010a60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A60 11732 bytes
SHA-256: fe81803e36fa810442baab70f6862c3c267f41a6d5489baad57be9a7473055b1

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