Malicious PDF — malware analysis report

Static analysis result for SHA-256 2202abfea7b1cd60…

MALICIOUS

PDF

83.0 KB Created: 2021-09-12 00:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 5ca9218a6e3af0db02f9c0f9e2607580 SHA-1: f6e5be47114289796b6f0bcbad0d1ccc61496916 SHA-256: 2202abfea7b1cd601366652576791bbbde1beb1bf23181317addd0d100252662
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to potentially disposable domains, suggesting a link farm or phishing lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to malicious external sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://760_709737661.mildmedia-dev.eu/uploads/userfiles/files/43372751452.pdf In PDF document text
    • https://spacio.hk/attachment/file/zukewefizizagalababigito.pdfIn PDF document text
    • https://manenshop.com/upload/files/70525308177.pdfIn PDF document text
    • http://telegid.tv/userfiles/files/69945148627.pdfIn PDF document text
    • http://ceramicaartisticamarsalese.it/userfiles/files/77648667195.pdfIn PDF document text
    • http://tianlanip.com/filespath/files/20210911182515.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/0adcb2591a840cc90e63f30996205a58/91422309973.pdfIn PDF document text
    • http://janjoling.com/public/ckfinder/userfiles/files/95226469901.pdfIn PDF document text
    • http://wmsone.com/eimages/file/76141571054.pdfIn PDF document text
    • https://digireg.cn/upload/65874477876.pdfIn PDF document text
    • http://1day2night.com/UserFiles/file/86470240033.pdfIn PDF document text
    • http://levant-tekstil.com/other_files/File/49149076649.pdfIn PDF document text
    • https://ost-fogging.com/upload/files/xilugilonitulaka.pdfIn PDF document text
    • http://alconsprom.ru/ckfinder/userfiles/files/vepenadanunuvagolawixen.pdfIn PDF document text
    • http://lindendirect.com/tempimg/file/zebirixokukiw.pdfIn PDF document text
    • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jetupesepixidekerujitif.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/24991888696.pdfIn PDF document text
    • http://maryalo.com/userData/board/file/43173052933.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133d35160f5d---19752180249.pdfIn PDF document text
    • http://favourtec.com/attachment/file/39314036158.pdfIn PDF document text
    • https://fibaquitaine.fr/cebatrama/userfiles/files/tokexe.pdfIn PDF document text
    • http://lyzjkgm.com/d/files/7577856820.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+remove+dark+mode+from+phonePDF 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_off0000e049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE049 17680 bytes
SHA-256: 83ac7c38dd9a0909a883c907a5fc50946ae6dca5608c94636ed41bbfde8c1e90
font_01_sfnt_off00010e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E16 10692 bytes
SHA-256: 57406deba411fff3a03a2ad7f9b554c1078961d6f2418385cfacb1d2c7ea3f12
font_02_sfnt_off0001266e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1266E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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