Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd27eba60419794…

MALICIOUS

PDF

71.3 KB Created: 2021-09-28 08:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: fb6a5dbf978aff250f66c63d37e3d610 SHA-1: 2f0b096a4ac6ac4b62f556f54df4d3ab898cac71 SHA-256: 9bd27eba60419794b47308eae2393d8a807082fde139fd62932f9e78069f9ce9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs pointing to external websites, indicating a likely phishing or malware distribution scheme. The PDF structure and the presence of external URIs suggest it's used as a lure to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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=pogaru+kannada+full+movie+watch+online PDF link annotation
    • https://dentrangtrisaigon.net/images/uploads/files/sonumibokopopez.pdfIn PDF document text
    • https://emotionalgift.youngzonejewelry.com/ckfinder/userfiles/files/56179113641.pdfIn PDF document text
    • https://zhbiotech.com/CKEdit/upload/files/8169746878.pdfIn PDF document text
    • http://kavernoklub.com/campannas/file/zewedarafotagegixebij.pdfIn PDF document text
    • https://yasacompany.com/upload/files/tifusujigowek.pdfIn PDF document text
    • http://fkhd.cz/data/img/29995012945.pdfIn PDF document text
    • https://dazhonghua1688.com/ckfinder/userfiles/files/76167843535.pdfIn PDF document text
    • https://ewdel.cz/ckfinder/userfiles/files/tililonubewosoxeponur.pdfIn PDF document text
    • http://villapellegrino.it/userfiles/files/zojutoparekokunoxufovis.pdfIn PDF document text
    • https://anitt.in/ckfinder/userfiles/files/5072364519.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/2559649166.pdfIn PDF document text
    • http://binhchuachay.info/Images_upload/files/safeluzijuxoteledas.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/4838dee57557bdade27f37cee692bd18/meludezoviwiligujobipe.pdfIn PDF document text
    • https://ewt.cz/res/file/46314816650.pdfIn PDF document text
    • https://dodatkireklamowe.pl/web/uploads/files/bodukuwu.pdfIn PDF document text
    • http://xn--66-6kc8bfmkmjd.xn--p1ai/admin/ckfinder/userfiles/files/39369979380.pdfIn PDF document text
    • http://smenergy.kr/uploaded/file/17725170061511ec073105.pdfIn PDF document text
    • https://rasathantrananotech.com/ckfinder/userfiles/files/xevexidobawipitobudoseza.pdfIn PDF document text
    • http://geo-equipe.it/userfiles/files/farenorizabotabasulij.pdfIn PDF document text
    • http://www.prodomasa.com/ckfinder/userfiles/files/dadegaz.pdfIn PDF document text
    • http://pn-tech.net/userData/board/file/wokujekad.pdfIn PDF document text
    • https://arhometutor.com/userfiles/file/goxidusakutajim.pdfIn PDF document text
    • http://as-eng.biz/userfiles/file/soxepeses.pdfIn PDF document text
    • http://fcraregistration.com/UploadedData/file/29231077879.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_off0000b356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB356 11100 bytes
SHA-256: f68c8c599861985d6573fb37f83ea134d23ec801a4862a791295c717547f8f0c
font_01_sfnt_off0000cce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE7 16760 bytes
SHA-256: 6b53e22374872243f2f5e909aa2b8dd415305cdacb02d722170381bc3957554b
font_02_sfnt_off0000f7b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1