Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c353d6ae6dc327…

MALICIOUS

PDF

82.6 KB Created: 2021-04-05 03:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d6a9303eb33117f1bd9a90a31ac7ee06 SHA-1: 003ece2ce2b5473b84fc13f8c6daabf9b8ff1069 SHA-256: 24c353d6ae6dc327e5c724fb348825c9647dd07e8fd2ddd9b5ce0edae220153f
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains and configured as a link farm, indicating a strong intent to redirect users to potentially harmful sites. The presence of external URIs and the 'link farm' heuristic strongly suggest a phishing or malware distribution attempt.

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://dugedepap.ru/strik?utm_term=what+causes+anion+gap+to+be+high PDF link annotation
    • http://wulixiv.sportsontheweb.net/20824583821.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/38814568594.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/lizuwafomuwo.pdfIn PDF document text
    • http://rabevazilogu.iblogger.org/42985998015.pdfIn PDF document text
    • http://magnifioco.site/2005_mercury_9.9_4_stroke_for_sale807zh.pdfIn PDF document text
    • http://kidobujugi.mypressonline.com/download_asmaul_husna_arab_latin_dan_artinya.pdfIn PDF document text
    • https://biwezufum.weebly.com/uploads/1/3/4/8/134872286/2667163.pdfIn PDF document text
    • https://dumopodowejuna.weebly.com/uploads/1/3/4/5/134591879/gigefisotatodili.pdfIn PDF document text
    • http://service-hire.com/birijanisori6m8pm.pdfIn PDF document text
    • https://vovavurag.weebly.com/uploads/1/3/0/7/130739927/bijoginukubawak_lasivubifafif.pdfIn PDF document text
    • http://xifitubi.22web.org/airline_ticket_reservation_system_project_report.pdfIn PDF document text
    • http://comforfemj.fun/rumase3g4mn.pdfIn PDF document text
    • https://lotopunukulel.weebly.com/uploads/1/3/4/4/134473418/kifofuma.pdfIn PDF document text
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/xuwemajufufafuwa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nanesipub.rf.gd/zapabubidaluvesage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c443a9df-13e3-4f34-a188-df96c8b3b64b/dopegupesifem.pdfIn PDF document text
    • http://wurasegato.rf.gd/que_es_biomagnetismo.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/semi_centrifugal_clutch.pdfIn PDF document text
    • http://tubulufegufixo.rf.gd/nimerejudofodidikok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19dd9328-7027-41dd-b2e5-be4ace4ac204/zuminevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ae38c46-e064-4886-acb3-ecf5bc9630ee/35752591946.pdfIn PDF document text
    • http://vogidefoxafubis.epizy.com/59110630416.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10585 5220 bytes
SHA-256: 6d65fc97e3740063d8273331b6236727bf8de745720641df2246f2b62c0bfcd8
font_01_sfnt_off00011755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11755 10972 bytes
SHA-256: 929887f8f11f0db11c5f6961414b8902683d8f295e52707a4341ee85c10986d5

Open this report in the interactive analyzer, or submit your own file for analysis.