Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdadf0570a8c2c52…

MALICIOUS

PDF

82.5 KB Created: 2021-09-16 17:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6c95de6f23b6335b3a7c4767558d1f92 SHA-1: 5b5aa5a15b83582166307869c1b270c25bac7a02 SHA-256: bdadf0570a8c2c52cd9039a7257da6169c476eb9b8a0664c37c7e2a682a72625
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating an attempt to redirect the user to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://nomylo.ru/uplcv?utm_term=android+gmail+app+not+syncing+automatically PDF link annotation
    • https://lifesmart.lifesmart.ro/ckfinder/userfiles/files/14463447340.pdfIn PDF document text
    • https://mandarinusa.com/userfiles/file/1630914408.pdfIn PDF document text
    • http://paradisoseminatrici.it/userfiles/files/meruwuro.pdfIn PDF document text
    • http://iact2001.com/userData/board/file/newanekut.pdfIn PDF document text
    • https://taiwancy.com/app/webroot/userfiles/files/vagodotew.pdfIn PDF document text
    • http://jingyitech.com/uploadfile/zitad.pdfIn PDF document text
    • https://luxesystem.site/js/ckfinder/userfiles/files/fenijifegu.pdfIn PDF document text
    • http://embeddedhr.com/ckfinder/userfiles/files/tafaxogekew.pdfIn PDF document text
    • http://tygodnikzuzlowy.pl/ckfinder/userfiles/files/21755759875.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb11253270---jetewema.pdfIn PDF document text
    • http://gardena.crazyrockinsushi.com/uploads/files/pelivubowopolami.pdfIn PDF document text
    • http://esipro.lu/userfiles/file/ritulanemonaguj.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/kobopunijinatubasuneku.pdfIn PDF document text
    • http://www.pacautomarketing.com/file/fimunakasozazi.pdfIn PDF document text
    • http://creationart.hu/files/file/64288601567.pdfIn PDF document text
    • http://inistor.com/ufiles/files/kuwaleduket.pdfIn PDF document text
    • http://medica-eg.com/userfiles/file/65098024942.pdfIn PDF document text
    • https://aspirans.com/files/file/popus.pdfIn PDF document text
    • http://globomax.eu/userfiles/file/62659679542.pdfIn PDF document text
    • http://sinoscaform.com/upload/ckimg/files/202109160436326379.pdfIn PDF document text
    • https://madame-tina.com/ckfinder/userfiles/files/zevabamezijewudat.pdfIn PDF document text
    • http://ellissi.org/userfiles/files/nuwetofiwegurajisisofo.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/9qf5ree9dartrefhjlgkva99ut/57971623269.pdfIn PDF document text
    • http://anoh.net/pds/userfiles/files/15471629580.pdfIn PDF document text
    • http://hamkr.com/userData/board/file/gipovejazunawe.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_off0000dc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC74 10920 bytes
SHA-256: b6c42b6c2188f4baa89191e7957f073144a3310e7a7871e6d46b54b1d087a1a1
font_01_sfnt_off0000f597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF597 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA9 17920 bytes
SHA-256: c04cb02a5e4650ea161c1eb34e5bf2e1faf663a8d33caa1146b3d4c274450883

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