Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d11aef64e281d99…

MALICIOUS

PDF

87.9 KB Created: 2021-09-17 08:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7e9a7d28dc91bef5bb16fe5d50c4b131 SHA-1: 5dbd7f0fae6e8f9aac0f281288efb00294454960 SHA-256: 0d11aef64e281d99e0431b4df0c2b79869b7da3ce2338bc2cd7664b9b9446ac7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://pixomot.ru/uplcv?utm_term=watch+online+dubbed+movies PDF link annotation
    • http://bibrka-school.org.ua/ckfinder/userfiles/files/41015183807.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/xizoseju.pdfIn PDF document text
    • http://1night2day.com/UserFiles/file/rumeguxugisuwazemesar.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/674af27524ac7f387e8e41dfef3f9e08/belujijepomoki.pdfIn PDF document text
    • http://jsqnchem.com/upload/files/3882081126.pdfIn PDF document text
    • https://mkserwis.pl/userfiles/file/71980636903.pdfIn PDF document text
    • http://kunbot.com/upload/files/84367095520.pdfIn PDF document text
    • http://rbtyutj01.com/userfiles/files/modinaluwakujofuk.pdfIn PDF document text
    • http://vasekurzy.cz/userfiles/file/81580607805.pdfIn PDF document text
    • https://mosaicopeoplecorporation.com/ckfinder/userfiles/files/90465702293.pdfIn PDF document text
    • http://koyomisushi.com/uploads/files/84674492007.pdfIn PDF document text
    • http://lexuspolymers.com/assets/ckfinder/userfiles/files/tiralizewoximowajokapesos.pdfIn PDF document text
    • http://xn----7sbndn5at.xn--p1ai/uploads/files/19844536887.pdfIn PDF document text
    • http://sdv.sk/userfiles/articles/file/93680503433.pdfIn PDF document text
    • https://ochronaskory.pl/pliki_user/File/33423846867.pdfIn PDF document text
    • http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/13813962350.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/52806786950.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/19270676657.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161419bbc0fa84---gujotajowiguloxa.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/77332701730.pdfIn PDF document text
    • http://aloisiquadri.it/userfiles/files/lugulezejijutok.pdfIn PDF document text
    • http://simonide.org/userfiles/file/sisunupawojufopat.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/28685874426.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://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_off0000f450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF450 10836 bytes
SHA-256: 88bb48485d1caa066b687ec5771bdfd563d1dbbfa107c41ca32baace1dd296ea
font_01_sfnt_off00010d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D23 17520 bytes
SHA-256: 71c979f7e5c982f29fdf7c9f58b15948c6d583ceca67b4441a705d589fa94f1a
font_02_sfnt_off00013a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A20 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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