Malicious PDF — malware analysis report

Static analysis result for SHA-256 e091802e970c614a…

MALICIOUS

PDF

88.2 KB Created: 2021-09-14 12:34:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 19d1da2cff0284d9f0d42ba343eb48ee SHA-1: a9b074d31fe3149174ed916aaaff047e05f572b4 SHA-256: e091802e970c614a2f3d461bce0b7e1d9dcfcef55d4180d74f02aaccc5dad306
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, a common tactic for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://kerekagy.hu/UserFiles/file/8186709899.pdf In PDF document text
    • http://sea-cruise.ru/ckfinder/userfiles/files/kenosowaxeked.pdfIn PDF document text
    • http://yacpa.org/yacpafiles/file/48101772174.pdfIn PDF document text
    • https://alarouba.com/ckfinder/userfiles/files/pogemaluzajoz.pdfIn PDF document text
    • http://pegasomeeting.medcoast.net/ckfinder/userfiles/files/26440242668.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/sevovelomivufutupijaguno.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613104a6d3ce7---1515995310.pdfIn PDF document text
    • https://unitytradecapital.com/ckfinder/userfiles/files/67298149318.pdfIn PDF document text
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/puvuwuxepolesegujigiwijoj.pdfIn PDF document text
    • http://realestatemiami.com/userfiles/files/koteb.pdfIn PDF document text
    • http://print-resource.co.uk/ckfinder/userfiles/files/36884996755.pdfIn PDF document text
    • http://vansuloi.com/uploads/userfiles/file/rotetoriguse.pdfIn PDF document text
    • https://ispartaprefabrik.com/ckfinder/upload/files/98440092725.pdfIn PDF document text
    • http://sushiloverca.com/uploads/files/18494760071.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16134177c1c34e---detejiziwa.pdfIn PDF document text
    • http://tuyothuyluc.vn/webroot/img/files/42763178488.pdfIn PDF document text
    • http://siamsnail.com/media/userfiles/files/65638622044.pdfIn PDF document text
    • http://xsteelstock.com/d/files/56590151306.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/gidirijuze.pdfIn PDF document text
    • http://hstairan.com/FCKeditor/editor/filemanager/connectors/php/userfiles/file/tajomajezuwifig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=camscanner+latest+apkPDF 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_off0000f42c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42C 10448 bytes
SHA-256: eff144e12fbaec2332f0980c856972d02d9ee75cb9634b5a7126092a3e6d95b0
font_01_sfnt_off00010be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE2 18420 bytes
SHA-256: 75185a376101c7627d1e061a72c179d1e39f858ff985b4a4bd9687c673c03f8a
font_02_sfnt_off00013bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BDE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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