Malicious PDF — malware analysis report

Static analysis result for SHA-256 34b000000fb0bdf4…

MALICIOUS

PDF

90.3 KB Created: 2021-09-19 19:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8d32ee97ebacb37dff39dc03239e9669 SHA-1: 3badf8df5d5b33e02cdc791aec89212d64271362 SHA-256: 34b000000fb0bdf4068d96040f682574ca655f1af2e1a7a217f2f78cb084ec76
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a malicious intent to redirect users. ClamAV detection and ML classification confirm its malicious nature, likely as a phishing or content distribution mechanism. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://smidgel.ru/uplcv?utm_term=regarder+des+films+en+ligne+gratuitement PDF link annotation
    • http://kwartetproforma.com/userfiles/file/71691712556.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/vufiwobamogap.pdfIn PDF document text
    • http://parejalecaros.com/adjunto/upload/fck/files/49100973861.pdfIn PDF document text
    • http://peoplefineart.com/assets/202109/files/20210907083307874816.pdfIn PDF document text
    • http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/38766750399.pdfIn PDF document text
    • http://redemaisfarma.com/userfiles/file/lovevedaxofudovug.pdfIn PDF document text
    • http://machinegroup.ru/img/outer/files/tazuv.pdfIn PDF document text
    • http://vinhthuan.com/upload/files/refibikofilojajov.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/pdu8vsfgsfkhogiudqh402cvra/pobegomatateruwe.pdfIn PDF document text
    • http://www.satunatc.ac.th/ckfinder/userfiles/files/50199276819.pdfIn PDF document text
    • https://www.twibiotech.com/plugin/ce1/ckfinder/userfiles/files/4805800748.pdfIn PDF document text
    • https://zilalcooling.com/other_files/File/redavebexevaxefebinewovas.pdfIn PDF document text
    • https://sharmtocairo.com/userfiles/files/23865203094.pdfIn PDF document text
    • https://www.stnedu.com/ckfinder/upload/files/73143931540.pdfIn PDF document text
    • http://lnv-cnc.com/userfiles/file/kazoko.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614462254d458---53105420814.pdfIn PDF document text
    • https://rawoctane.com/uploads/file/76909280517.pdfIn PDF document text
    • http://imoroz.by/upload/file/xinam.pdfIn PDF document text
    • https://bushregenerators.com/userfiles/files/ropuxifexurunogal.pdfIn PDF document text
    • https://unitedfightalliance.jordanadams.com/ckfinder/userfiles/files/rabivafololavopu.pdfIn PDF document text
    • https://rougezenekar.hu/files/file/wegudifotofusezovomu.pdfIn PDF document text
    • https://novinfasteners.com/userfiles/file/fabepidatosibabone.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_off0000f699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF699 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB0 10724 bytes
SHA-256: 9e9b6ac089c71b9dd68eedd665bcd4300f4d03b2f23af5df10e2e208b98729e0
font_02_sfnt_off00012708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12708 20700 bytes
SHA-256: 6e999c0991f6c4077ffb7e74fe11b5fc8a50b774a4abcddb294c24e22a0bf359

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