Malicious PDF — malware analysis report

Static analysis result for SHA-256 907c7339258e2fde…

MALICIOUS

PDF

69.1 KB Created: 2021-10-01 15:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: a1bb36be8b042ef5ae87fbf770013ec2 SHA-1: e31254d6e29fb31a94333be8e344dc60187426e5 SHA-256: 907c7339258e2fde1a25ab2d9f3ecd22a313df22f09b1a8f16a12af578634ee4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous embedded URLs, many of which point to potentially malicious domains, and is structured as a link farm. The presence of these links, combined with the 'watch west wing online' lure, suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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://abrasco.org.br/ckfinder/userfiles/files/muwez.pdf In PDF document text
    • http://ventima.ru/userfiles/file/zivusowamovexerezasu.pdfIn PDF document text
    • http://bfcy88.com/uploads/files/sezinuxumebejaramo.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/24270366874.pdfIn PDF document text
    • http://househouse.it/userfiles/files/51824622586.pdfIn PDF document text
    • https://stradatextiles.com/upload/ckfinder/files/99834436572.pdfIn PDF document text
    • http://sjccgy.com/userfiles/file/lufas.pdfIn PDF document text
    • http://manchetenewsms.com.br/ckfinder/userfiles/files/18514790731.pdfIn PDF document text
    • https://gruppopolidori.com/upload/image/file/gobise.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/41877413834.pdfIn PDF document text
    • https://pasarantogel2.com/contents/files/54554508806.pdfIn PDF document text
    • http://goref.ru/files/file/birenidubasavikosamodisik.pdfIn PDF document text
    • http://oilmachineydy.com/d/files/76077857828.pdfIn PDF document text
    • https://zaragozadenoche.es/upload/files/zavemarokizoxageleve.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/jatizobuniku.pdfIn PDF document text
    • http://ptairsupply.com/userfiles/file/90684999187.pdfIn PDF document text
    • https://joebalogh.ro/imagini_ws/66113512341.pdfIn PDF document text
    • https://rux-thai.com/ckfinder/userfiles/files/nigunanevufu.pdfIn PDF document text
    • http://maristaslardero.es/userfiles/file/wutipimanid.pdfIn PDF document text
    • http://usagimatur.com/files/others/dobopisojajewagozawik.pdfIn PDF document text
    • http://alltimescare.com/attachment/files/xejan.pdfIn PDF document text
    • https://baglab.pl/galeria/file/43027791608.pdfIn PDF document text
    • https://vipbeachhouse.com/uploads/editor/file/minaxukasurabuserutizivu.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161427af8d44e2---bumipevotukivarudelane.pdfIn PDF document text
    • http://forepic.com/_UploadFile/Images/file/geguxixevixabakejaweditan.pdfIn PDF document text
    • http://theheavent.com/userfiles/files/25970644412.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=watch+west+wing+onlinePDF link annotation
    • 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_off0000b2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2A8 14524 bytes
SHA-256: db2fb8b317975f388a8957cac468230021b4c40e89ebc526344bb2842f8b02f0
font_01_sfnt_off0000d6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D5 10488 bytes
SHA-256: ee255707be0d733d07c8d0a4a45718b9393c9d3124924102b7462af155c84d3a
font_02_sfnt_off0000eebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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