Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7383411affadc3…

MALICIOUS

PDF

81.6 KB Created: 2021-09-10 07:44:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 59dbacd0045c7967a72147b5b25917a3 SHA-1: 0e55858e0c7cb42023392219b9806474201b06b8 SHA-256: 0e7383411affadc3297dfe8ad75a4156806949920c9517750910b9f77fbbc649
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://bongoes62.dk/userfiles/file/givasaw.pdf In PDF document text
    • http://artdental.hu/editor_up/26182886399.pdfIn PDF document text
    • http://jnmindia.com/outscapes/admin/ckeditor/uploads/ck/files/68220354142.pdfIn PDF document text
    • http://pampa.be/uploads/userfiles/files/ziruwoko.pdfIn PDF document text
    • http://lnv-cnc.gr/userfiles/file/tekorivalifopojuwi.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134705e83bf7---55683415484.pdfIn PDF document text
    • https://hometutorsdelhi.com/userfiles/files/wofijej.pdfIn PDF document text
    • https://jkmart.net/FCKFiles/File/jomon.pdfIn PDF document text
    • http://jainfarms.com/uploads/bekumoni.pdfIn PDF document text
    • https://hram-uspeniya.ru/ckfinder/userfiles/files/lakepenemo.pdfIn PDF document text
    • https://repairbase.net/FCKeditor/editor/filemanager/connectors/php/images/file/77194275391.pdfIn PDF document text
    • https://kaowei.tw/image/files/20210909_035321.pdfIn PDF document text
    • http://sictombbi.fr/ckfinder/userfiles/files/zezizinikevosipejifexola.pdfIn PDF document text
    • http://studiozammuner.eu/userfiles/files/vimuxadamumimod.pdfIn PDF document text
    • http://jar-ted.pl/file/94175820828.pdfIn PDF document text
    • http://shmgec.com/Uploadfiles/files/60583049993.pdfIn PDF document text
    • https://812423.qqtogeljackpot2.com/contents/files/wetanasasekinowor.pdfIn PDF document text
    • http://uralteplostroy.ru/content/file/vegaleparevot.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9709f39ed---13674536365.pdfIn PDF document text
    • https://zzwgjx.com/d/files/newidawezoledazajogutaso.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/roredumowivo.pdfIn PDF document text
    • https://mb-classic-service.de/userfiles/file/lukuduxopijup.pdfIn PDF document text
    • http://tamtamphat.com/upload/files/fevufepalubixeferezaputav.pdfIn PDF document text
    • http://phutunggiahungoto.com/uploads/files/92806048689.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=aac+to+mp3+androidPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD723 18804 bytes
SHA-256: ae272e5db7e7841cff20f039786174df21271f72336dc4299f6ba3782d787898
font_01_sfnt_off000108b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000120cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CF 10484 bytes
SHA-256: f23199a97861cd4b82f44a96e67b21c09e2d085d6cc37219ffe066c67c4a5429

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