Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cad929b603e4ad1…

MALICIOUS

PDF

68.7 KB Created: 2021-10-02 02:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: f6fecae2e861fc70be01fb389b36a48e SHA-1: f1d6e27665eff7e40b640711008e0af1c68590f4 SHA-256: 9cad929b603e4ad109ba74db018c47884ffaab94537fb141c0373183dd145f38
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which are on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://crewmak.ru/uplcv?utm_term=vai+bon+chudar+golpo PDF link annotation
    • https://aordonez.com/images/contenidos/files/femasazu.pdfIn PDF document text
    • http://liga-stf.ru/i/upload/files/defabopened.pdfIn PDF document text
    • http://pyroglobal.sk/app/webroot/files/userfiles/files/33205809025.pdfIn PDF document text
    • http://daliangluyinpeng.com/userfiles/file/27701657295.pdfIn PDF document text
    • http://akvarium-olbrecht.cz/upload/file/robudufukevowili.pdfIn PDF document text
    • http://maurovalleferroarchitetto.eu/userfiles/files/53517526526.pdfIn PDF document text
    • https://dongphuchuytai.com/upload/files/rosefimeza.pdfIn PDF document text
    • https://moiatakashta.com/userfiles/file/56922174643.pdfIn PDF document text
    • http://ecme.site/upload/files/wixawitajuwiligokono.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/e421e44e2cda26db28a8e39573751c8f/5309964902.pdfIn PDF document text
    • https://hw-power.com/uploads/ckfiles/files/6148f07c2f8ea.pdfIn PDF document text
    • https://lentes123.com/aym_image/files/41565399025.pdfIn PDF document text
    • http://gu-bo.cn/uploads/files/71203533258.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/vibajavamusifo.pdfIn PDF document text
    • https://croatia-flyfishing.com/files/90013415007.pdfIn PDF document text
    • http://artechq8.com/beta/uploads/files/womim.pdfIn PDF document text
    • https://echipamente-scule.ro/userfiles/file/gizijuvixopojenemukak.pdfIn PDF document text
    • http://autostyle-japan.com/js/upload/files/dosof.pdfIn PDF document text
    • http://getvisa.ru/images/File/butej.pdfIn PDF document text
    • https://electroagro.es/pub/files/gavelamadagemenebiferoku.pdfIn PDF document text
    • https://marcuspietrek.de/MARCUS/files/file/pufelinosotamurakif.pdfIn PDF document text
    • https://zakarpattya-tour.com/upload/79475659625.pdfIn PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/jukusagimofizofowalip.pdfIn PDF document text
    • http://rayanchem.com/d/files/16048723889.pdfIn PDF document text
    • http://mail-ex.net/userfiles/file/99004374903.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_off0000aef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEF3 14800 bytes
SHA-256: b6162feb4843b9c67a01ec9d4d14f1b3c40dc326bd05f80726d198e0f8ccc485
font_01_sfnt_off0000d417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD417 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ec2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2E 10604 bytes
SHA-256: b36d3a0c30d113aa53d72b3b478a2e73bd26b426f16a16e933b72bbc43f8a658

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