Malicious PDF — malware analysis report

Static analysis result for SHA-256 7322366f4de09e2a…

MALICIOUS

PDF

82.4 KB Created: 2021-09-14 05:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b5621674a4a2e020f7f40a143f378e4c SHA-1: 17033ebc233326cda0c5390350e16c49cf8ba119 SHA-256: 7322366f4de09e2ab43f196834c0c653a884a37c7d8a0a0aa2cb94827c8d48fa
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm with a high number of distinct hosts, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic further support this, indicating the document's primary purpose is to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://wrtour.com/FileData/ckfinder/files/20210908_03546B1ED95042CE.pdf In PDF document text
    • http://fine-trading-knotwork.com/uploads/media/59969109860.pdfIn PDF document text
    • https://ladachess.ru/userfiles/file/67133244249.pdfIn PDF document text
    • http://tuderprogettazione.it/userfiles/files/32126460901.pdfIn PDF document text
    • https://multimetrics.com/ckfinder/userfiles/files/39361344466.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/76bbvne26m25p0vki40u8f2os0/41375619695.pdfIn PDF document text
    • http://antansconstructions.com/ckfinder/userfiles/files/xawemedatereremilipajivij.pdfIn PDF document text
    • http://badgerhillfarm.uk/tirugaxugitilufak.pdfIn PDF document text
    • https://unchiulmihai.ro/files/fckeditor/file/sejusofetatavev.pdfIn PDF document text
    • http://vejwun.cz/images/regegijabe.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/nakivupom.pdfIn PDF document text
    • http://kidzcastleschool.com/singhania/downloads/file/dekejuvubiganit.pdfIn PDF document text
    • https://cfi-registration.amyhalter.com/buzzboxgift/img/userfiles/files/90200365053.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/66062333941.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/53902947619.pdfIn PDF document text
    • http://nanouklid.cz/upload/file/16197292053.pdfIn PDF document text
    • http://drzwiukryte.pl/userfiles/file/2381401353.pdfIn PDF document text
    • https://digireg.it/upload/27330977302.pdfIn PDF document text
    • http://ahkkpcm.org/userfiles/48353827211.pdfIn PDF document text
    • https://shopinhome.com/ci/userfiles/files/gotebexapodokarisirif.pdfIn PDF document text
    • https://sklepbonus.eu/userfiles/file/20246421908.pdfIn PDF document text
    • https://kapefashion.com/files/files/75408835084.pdfIn PDF document text
    • http://bilcafe.it/userfiles/file/fapaxelawo.pdfIn PDF document text
    • https://camping-du-lac-dijon.com/userfiles/fichiers/49560103961.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=stick+cricket+live+downloadPDF 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_off0000dde3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f5f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F5 17596 bytes
SHA-256: 2b444981d0b5e14ca0e8a97f8507ba4995d75b6f3f874c8e63350658afe30324
font_02_sfnt_off000123f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123F3 10516 bytes
SHA-256: 10ba5564e4194460e52a1430617bb5b74ff81e949912d45a21cf2da41a2fab3d

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