Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1b66cb38714deb…

MALICIOUS

PDF

91.2 KB Created: 2021-10-08 11:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 8260dafd9bd62e84b02e3f394800df87 SHA-1: ad26af0dc05a0abd7908c02349a3794932d43275 SHA-256: 0e1b66cb38714debbf76e9308d93728debbd47ebc6a492bb6f01cd1ffb595e45
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable hosting, characteristic of a link farm designed to redirect users to malicious sites. The 'utm_term' parameter in one URL suggests a potential phishing lure related to image conversion.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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 https://archism.ru/uplcv?utm_term=photoshop+images+to+pdf PDF link annotation
    • http://webinaris.training/ckfinder/userfiles/publics/files/60134097151.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/161514ffbdeaeb---70356052534.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/88221802147.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210914095204646.pdfIn PDF document text
    • http://tokyo-sanritsu.com/userfiles/file/98634204662.pdfIn PDF document text
    • http://uklearningnetwork.com/userfiles/file/31265704727.pdfIn PDF document text
    • http://www.domplit2006.ru/ckfinder/userfiles/files/fufubop.pdfIn PDF document text
    • http://artemon.nl/userfiles/file/pugiwemaganetigazagosuj.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/91784233989.pdfIn PDF document text
    • http://justsayhi365.com/uploads/file/49482573662.pdfIn PDF document text
    • https://galerieportelouise.be/userfiles/files/zonadi.pdfIn PDF document text
    • https://yasacompany.com/upload/files/92225903625.pdfIn PDF document text
    • http://cornaredo.gattinonimondodivacanze.it/themes/userfiles/files/39091285526.pdfIn PDF document text
    • http://resurrection-life.net/userfiles/files/78463271468.pdfIn PDF document text
    • http://ceramkgres.ru/userfiles/file/vawerenizenesorufafa.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f838c0e684---raselij.pdfIn PDF document text
    • https://lotteppta.com/beta/assets/file/kurobidovovijulawoxaroxi.pdfIn PDF document text
    • http://anais.terminarz.online/kosmetyczka/krakow/files/boxofuxeziva.pdfIn PDF document text
    • https://chief-moving.com/editor_upload/file/luwavomaboxa.pdfIn PDF document text
    • https://enerjimakine.com/tsrm1/img/userfiles/file/toxeredikawirukop.pdfIn PDF document text
    • http://www.moyekolodin.com/files/54352367673.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_off0000fdca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000115e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E1 10696 bytes
SHA-256: 5b16edccda6744b32b6385d2199c455db84deaaf47471a4deeb9ebe4963f684f
font_02_sfnt_off00012e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E45 19348 bytes
SHA-256: 92acf3a5ca8ee2de9fc5fd3210f48217d113a06c26ab759d7dd2a1af42384866

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