Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b621427c3e2de2…

MALICIOUS

PDF

81.7 KB Created: 2021-09-19 05:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ddbb898fbb619da08b94e6a4aee73174 SHA-1: 3eaa25b85c4f21e8d2eb1855b0bdb2cbcfe4bbdf SHA-256: 68b621427c3e2de28bd8f3e374d91e2ba58be0b543320499b72ea98dafcce786
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to suspicious domains or are hosted on potentially compromised websites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The presence of external URIs suggests the document is intended to redirect the user to malicious sites, likely for credential harvesting or further payload delivery.

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 https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143bde4c808c---papazofikuworuk.pdf In PDF document text
    • https://www.wizzfizz.com.au/application/third_party/ckfinder/userfiles/files/jiwelofuru.pdfIn PDF document text
    • http://swissies.lt/ckfinder/userfiles/files/dusadifiw.pdfIn PDF document text
    • https://hamasataccessories.com/userfiles/files/63611762463.pdfIn PDF document text
    • https://tselectromechanical.com/uploads/CKfiles/files/17058295364.pdfIn PDF document text
    • http://sntaviator.ru/ckfinder/userfiles/files/sajodudororolav.pdfIn PDF document text
    • https://www.educationsexuelle-ecole.ch/ck/ckfinder/userfiles/files/fikonadubapoz.pdfIn PDF document text
    • https://cribpointonline.org/cribpointonline/userimages/file/xasaveworu.pdfIn PDF document text
    • https://arslanemlak.com/E/file/In PDF document text
    • https://pacantioquia.org/aym_image/files/powumozidikegipase.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/60249901702.pdfIn PDF document text
    • http://mcrlclient.gilcom.ro/ckfinder/userfiles/files/38517202560.pdfIn PDF document text
    • https://tenderdiary.com/ckfinder/userfiles/files/21590417009.pdfIn PDF document text
    • https://castilloexterior.org/ckfinder/userfiles/files/mijamujorupuwurojeko.pdfIn PDF document text
    • https://rmp-familienanzeigen.de/cms/files/jusubulexesamuse.pdfIn PDF document text
    • http://kvbm.org/pds/userfiles/files/gogukedunasib.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132ec94aa955.pdfIn PDF document text
    • http://idrogastermoclima.it/Utentifile/FCKPage/file/14890840648.pdfIn PDF document text
    • https://goodline.by/userfiles/file/kafisorusedomex.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/voxumapexixitonupupuliz.pdfIn PDF document text
    • http://evpltravel.com/xv_image/file/pufikaxeja.pdfIn PDF document text
    • https://csn-alliance.com/data/files/64266369203.pdfIn PDF document text
    • http://studiocinti.eu/userfiles/files/dijugewegosuvitijojakes.pdfIn PDF document text
    • http://planao.com/ckfinder/userfiles/files/vapeziwimiwogavasap.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=truecaller+premium+mod+apk+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_off0000dc3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3F 17324 bytes
SHA-256: 02e09cd6b7fc14d0482413d8831cc8757f2dcce73b0534969d074d6080687241
font_01_sfnt_off000108e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12100 10648 bytes
SHA-256: ed4b1ed136f3762cfa7d47831388ba40b3c222dad32de6c23d851ae682d70139

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